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backcross 19
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cassock 15
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cossack 15
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brocks 14
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cracks 14
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crocks 14
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acock 13
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backs 13
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bocks 13
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brack 13
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brock 13
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crack 13
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crock 13
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croaks 12
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back 12
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bock 12
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cack 12
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corsacs 11
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barks 11
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basks 11
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boaks 11
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bocca 11
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borak 11
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borks 11
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bosks 11
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carks 11
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casks 11
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corks 11
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croak 11
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kbars 11
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krabs 11
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racks 11
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rocks 11
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sacks 11
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socks 11
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carbos 10
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carobs 10
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cobras 10
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corsac 10
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kaross 10
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scrobs 10
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bark 10
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bask 10
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boak 10
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boks 10
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bork 10
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bosk 10
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brak 10
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cark 10
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cask 10
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cork 10
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kabs 10
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kbar 10
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kobs 10
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krab 10
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rack 10
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rock 10
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sack 10
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sock 10
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askos 9
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carbo 9
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carbs 9
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carob 9
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casco 9
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coarb 9
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cobra 9
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cocas 9
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crabs 9
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crocs 9
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koras 9
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ksars 9
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okras 9
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sarks 9
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scabs 9
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scrab 9
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scrob 9
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soaks 9
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bok 9
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kab 9
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kob 9
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across 8
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oscars 8
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arks 8
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asks 8
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bacs 8
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cabs 8
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carb 8
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cobs 8
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coca 8
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crab 8
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croc 8
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karo 8
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koas 8
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kora 8
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kors 8
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koss 8
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ksar 8
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oaks 8
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okas 8
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okra 8
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roks 8
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sark 8
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scab 8
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skas 8
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soak 8
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acros 7
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basso 7
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boars 7
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boras 7
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brass 7
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crass 7
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cross 7
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orcas 7
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oscar 7
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scars 7
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sobas 7
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socas 7
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sorbs 7
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ark 7
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ask 7
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bac 7
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cab 7
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cob 7
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kas 7
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koa 7
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kor 7
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kos 7
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oak 7
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oka 7
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rok 7
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ska 7
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acro 6
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arbs 6
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arco 6
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arcs 6
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bars 6
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bass 6
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boar 6
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boas 6
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bora 6
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bors 6
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boss 6
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bras 6
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bros 6
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cars 6
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cors 6
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cosa 6
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coss 6
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obas 6
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ocas 6
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orbs 6
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orca 6
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orcs 6
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robs 6
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rocs 6
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sabs 6
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sacs 6
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scar 6
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soba 6
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sobs 6
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soca 6
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socs 6
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sorb 6
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saros 5
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soars 5
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soras 5
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abs 5
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arb 5
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arc 5
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bar 5
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bas 5
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boa 5
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bor 5
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bos 5
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bra 5
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bro 5
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car 5
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cor 5
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cos 5
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oba 5
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obs 5
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oca 5
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orb 5
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orc 5
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rob 5
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roc 5
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sab 5
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sac 5
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sob 5
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soc 5
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oars 4
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osar 4
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ossa 4
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sars 4
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soar 4
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sora 4
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ars 3
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oar 3
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ora 3
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ors 3
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ras 3
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sar 3
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sos 3