BACKCROSSED

ab ad ae ar as ba be bo de do ed er es ka od oe or os re so

abo abs ace ado ads arb arc are ark ars ask ass bad bar bas bed bes boa bod bos bra bro cab cad car cob cod cor cos dab dak deb doc doe dor dos ear eds era ers ess kab kae kas kea koa kob kor kos oak oar oba obe oca oda ode ods oes oka oke ora orb orc ore ors ose rad ras reb rec red res rob roc rod roe sab sac sad sae sea sec ser ska sob sod sos

abed abos aced aces acre ados aero arbs arco arcs ares arks arse asks back bade bads bake bard bare bark bars base bask bass bead beak bear beck beds berk boar boas bock bode bods bora bore bork bosk boss brad brae bras bred bros cabs cade cads cake carb card care cark cars case cask ceca cero cess cobs coca cock coda code cods coed coke cord core cork cors coss crab cred croc dabs dace daks darb dare dark dear debs deck deco desk dock docs doer does dore dork dors dose doss drab drek ears eras eros kabs kaes kbar keas kerb koas kobs kora kore kors koss oaks oars obas obes ocas odas odea odes okas okes okra orad orbs orca orcs ores osar oses ossa race rack rads rake rase read rebs reck recs redo reds road robe robs rock rocs rode rods roes rose sabe sabs sack sacs sade sake sard sark scab scad scar sear seas secs sera sers skas soak soar soba sobs soca sock soda sods soke sora sorb sord sore