aaaa aaac aaaf aaar aaca aacc aacf aaco aacr aact aafa aafc aaff aaoo aara aarc aaro aart aata aatc aatf aatt ac-t acaa acac acar acat acca accc accf acco acct acfc acft acoa acor acot acr- acra acrc acro acrr acta actc actf acto actt afaa afao afar afat afca afcc affa affc affo afft afoa afoo afor afox afr- afra afrc afro afta aftc aoca aora aort aotc aotf arac araf arar arat arax arc- arca arco arct arfa arfc arff arft 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 atcf atco atcr atfc atoc atof ator atot atra atrc atro atrx atta atto attr axaf axar axat axfr axo- axoa axof axto axxo caaa caac caaf caat cac- caca cacc caco cacr cafa cafc caff caor cara carc carf caro carr cart carx cat- cata catc catf cato catt caxa ccaa ccac ccaf ccar ccat ccca cccc cccf ccfa ccfc ccff ccoc ccra ccrc ccrf ccrt cctc cctt cfaa cfac cfao cfar cfax cfca cfcf cfco cffr cfoa cfor cfox cfra cfrt cfrx cfta cftc cftr coat coax coca coco coct cofc coff coft coof coot cor- cora corc corf coro corr cort cota cotc coto cott coxa crac craf crar crat crax crca crcc crcr crfc croc croo cror crot crrt crtc crtf ctca ctcf ctfc ctfo ctor ctot ctrc ctta cxro cxxx faaa faac faca facc fact fafa fafc faff fafo fara farc faro farr fart fata fatc fatf fato fatt fcar fcat fcca fccf fcot fcra fcto ffar ffcc ffff ffrr fftf foaf foar foca foco fofo foof foot for- fora foro forr fort fota foto fott foxx frac frat frax frcc frfc frot frta ft-c ftfc oafc oafo oara ocac ocat occa occc occt ocfa ocra ocro ocrr oct- octa octo ofcr off- offa offc offo offr ofor ofra ofta ooaa oocr ooff oooo oora oort orac orao orar orat orca orco orff oro- orof oror orot orra orro orta ortc orto otac otar otfc oto- otof otoo otor otra otro otta otto oxa- oxo- oxof oxox oxxo raaf raat rac- raca racc raco ract rafa rafc raff raft raoc rara rarf raro rata ratf rato ratt raxa rcac rcaf rccc rcfc rctc rffc rftc roaf roar roat roca rocc roco rofc roff rofo roof roor root roox rora rorc roro rort rota rotc roto rotr rott roxa roxo rrat rrfc rrrr rtca rtcc rtfc taa- taaf taar taat taca tacc taco tact tafa tafc taff tafo taft taoa taor tara tarc tarf taro tarr tart tata tato tatr tatt tax- taxa taxf taxo taxt tcca tccc tcfc tctc tfca tfot tfox tftc toat toca toco tofa toff tofo toft tooa toof toor toot tora torc torf toro torr tort torx tota totc toto totr tott tox- toxa toxo toxt traa trac traf trao trat trax trca trcc trfc trfr troa troc troo trot trox trra trtc trtr ttfa ttfc ttff tttt txaa txtr xaar xact xara xcat xoca xoco xoro xoxo xtar xtra xtro xxxo xxxx