aaaa aaac aaaf aaal aaar aaca aacc aacf aacl aacr aact aafa aafc aaff aafl aala aalc aall aara aarc aart aata aatc aatf aatt ac-t acaa acac acar acat acca accc accf acct acfc acfl acft acla aclc aclr acr- acra acrc acrr acta actc actf actl actt afaa afar afat afca afcc affa affc afft afla aflc afr- afra afrc afta aftc alaa alac alal alar alat alca alcc alfa all- alla alll allr alta arac araf aral arar arat arc- arca arct arfa arfc arff arft arla arr- arra arrc arrr arrt arta artc artr at-l at-t ataa atac atal atar atat atca atcc atcf atcl atcr atfc atla atra atrc atta attr caaa caac caaf caal caat cac- caca cacc cacr cafa cafc caff cafl cala calc calf call calt cara carc carf carl carr cart cat- cata catc catf catt ccaa ccac ccaf ccar ccat ccca cccc cccf cccl ccfa ccfc ccff ccfl ccla cclc ccra ccrc ccrf ccrl ccrt cctc cctl cctt cfaa cfac cfar cfca cfcf cfcl cffr cfra cfrt cfta cftc cftl cftr claf clar clat clra cltc crac craf crar crat crca crcc crcr crfc crfl crlf crrt crtc crtf crtl ctal ctca ctcf ctfc ctrc ctrl ctta faaa faac faca facc fact fafa fafc faff fala falc fall falt fara farc farl farr fart fata fatc fatf fatt fcal fcar fcat fcca fccf fcra ffar ffcc ffff ffrr fftf flac flat flcl frac frat frcc frfc frla frta ft-c ft-l ftfc laaa laac laal laar laat laca lacc lacl lact lafc laff laft lala lall lara larc larf larr lart lata latc latt lcac lcat lcca lccc lcfc lcfr lcra lcrl lctl lfat lfca lfcc llat llcc lllc llll lrac lral lrat lrfc lrrc lrrr lrta ltac ltcc ltfc ltra lttc lttr raaf raat rac- raca racc ract rafa rafc raff raft rala ralf rall ralt rara rarf rata ratf ratt rcac rcaf rccc rcfc rctc rffc rffl rftc rrat rrfc rrrr rtca rtcc rtfc rtlt taa- taaf taal taar taat taca tacc tacl tact tafa tafc taff taft tala talc tall tara tarc tarf tarr tart tata tatr tatt tcca tccc tcfc tctc tfal tfca tftc tlac traa trac traf tral trat trca trcc trcl trfc trfr trra trtc trtr ttfa ttfc ttff tttt