aaaa aaac aaar aaca aacc aaco aacr aact aaoo aara aarc aaro aart aata aatc aatt ac-t acaa acac acar acat acca accc acco acct acoa acor acot acr- acra acrc acro acrr acta actc acto actt aoca aora aort aotc arac arar arat arax arc- arca arco arct aroa aroo aror arr- arra arrc arro arrr arrt arta artc arto artr artx at-t at-x ataa atac atar atat atax atca atcc atco atcr atoc ator atot atra atrc atro atrx atta atto attr axar axat axo- axoa axto axxo caaa caac caat cac- caca cacc caco cacr caor cara carc caro carr cart carx cat- cata catc cato catt caxa ccaa ccac ccar ccat ccca cccc ccoc ccra ccrc ccrt cctc cctt coat coax coca coco coct coot cor- cora corc coro corr cort cota cotc coto cott coxa crac crar crat crax crca crcc crcr croc croo cror crot crrt crtc ctca ctor ctot ctrc ctta cxro cxxx oara ocac ocat occa occc occt ocra ocro ocrr oct- octa octo ooaa oocr oooo oora oort orac orao orar orat orca orco oro- oror orot orra orro orta ortc orto otac otar oto- otoo otor otra otro otta otto oxa- oxo- oxox oxxo raat rac- raca racc raco ract raoc rara raro rata rato ratt raxa rcac rccc rctc roar roat roca rocc roco roor root roox rora rorc roro rort rota rotc roto rotr rott roxa roxo rrat rrrr rtca rtcc taa- taar taat taca tacc taco tact taoa taor tara tarc taro tarr tart tata tato tatr tatt tax- taxa taxo taxt tcca tccc tctc toat toca toco tooa toor toot tora torc toro torr tort torx tota totc toto totr tott tox- toxa toxo toxt traa trac trao trat trax trca trcc troa troc troo trot trox trra trtc trtr tttt txaa txtr xaar xact xara xcat xoca xoco xoro xoxo xtar xtra xtro xxxo xxxx