aaaa aaac aaae aaaf aaar aaca aacc aace aacf aacr aact aaea aaec aafa aafc aaff aara aarc aare aart aata aatc aatf aatt ac-t acaa acac acae acar acat acca accc acce accf acct ace- acea acec acer acet acfc acfe acft acr- acra acrc acre acrr acta actc acte actf actt aeac aeaf aect aeer aer- aera aerc aeta aetc aetf aetr aett afaa afar afat afca afcc afee afer afet affa affc afft afr- afra afrc afre afta aftc afte arac arae araf arar arat arc- arca arce arct area arec aree aref aret arfa arfc arff arft arr- arra arrc arre arrr arrt arta artc arte artr at-t ataa atac atae atar atat atca atcc atcf atcr atea atec atee atef ater atfc atfe atra atrc atre atta atte attr caaa caac caaf caat cac- caca cacc cace cacr caec caer cafa cafc cafe caff cara carc care carf carr cart cat- cata catc cate catf catt ccaa ccac ccaf ccar ccat ccca cccc cccf ccee ccfa ccfc ccff ccra ccrc ccre ccrf ccrt cctc cctt ceac cear ceat cec- ceca cece cect ceec cef- cefa cefc cer- cera cerc cere cerf cert cet- ceta cete cfaa cfac cfae cfar cfca cfcf cffr cfra cfre cfrt cfta cftc cfte cftr crac craf crar crat crca crcc crce crcr cre- crea crec cree cret crfc crrt crtc crtf ctae ctca ctcf ctec ctfc ctrc ctta eaaf eaca eacc eaec eara eare eart eata eate ecaa ecac ecar ecat ecca eccc ecce ecct ecef ecfa ecfc ecfr ecra ecrc ecrf ecrr ect- ecta ectc ectf eeca eeea eeee eefa eefe eera eerc eeta eetc eete efca efet effa eft- efta eraf erat erca ercc erce erec erer eret erfc erft erra errc erre erta etat etcc etec etee eter etfa etfc etfe etra etre etta ette faaa faac faca facc face fact fafa fafc fafe faff fara farc fare farr fart fata fatc fate fatf fatt fcar fcat fcca fccf fcra feaf fear feat fece fect feer feet fefc fefe feff fera ferc fere ferr fert feta fete fetr fett ffar ffcc ffee ffff ffrr fftf frac frae frat frcc frea free fret frfc frta ft-c ftea fter ftfc raaf raat rac- raca racc race ract raec raef raer rafa rafc rafe raff raft rara rare rarf rata rate ratf ratt rcac rcaf rccc rcet rcfc rctc rea- reac reae reaf rear reat reca recc rece recr rect reef reet refe reff refr reft rera rere rert reta rete retr rett rfae rfef rffc rftc rrat rrfc rrrr rtca rtcc rtce rtee rtfc taa- taaf taar taat taca tacc tace tact taec taer tafa tafc tafe taff taft tara tarc tare tarf tarr tart tata tate tatr tatt tcca tccc tcfc tctc teac tear teat teca tecr tect teec teef teer teet tefc teff teft ter- tera terc tere terf terr teta tete tetr tett tfae tfca tfec tftc traa trac trae traf trat trca trcc tre- trea trec tree tref tret trfc trfr trra trtc trte trtr tter ttfa ttfc ttff tttt