aaaa aaac aaaf aaal aaar aaca aacc aacf aacl aacr aafa aafc aaff aafl aala aalc aall aara aarc acaa acac acar acca accc accf acfc acfl acla aclc aclr acr- acra acrc acrr afaa afar afca afcc affa affc afla aflc afr- afra afrc alaa alac alal alar alca alcc alfa all- alla alll allr arac araf aral arar arc- arca arfa arfc arff arla arr- arra arrc arrr caaa caac caaf caal cac- caca cacc cacr cafa cafc caff cafl cala calc calf call cara carc carf carl carr ccaa ccac ccaf ccar ccca cccc cccf cccl ccfa ccfc ccff ccfl ccla cclc ccra ccrc ccrf ccrl cfaa cfac cfar cfca cfcf cfcl cffr cfra claf clar clra crac craf crar crca crcc crcr crfc crfl crlf faaa faac faca facc fafa fafc faff fala falc fall fara farc farl farr fcal fcar fcca fccf fcra ffar ffcc ffff ffrr flac flcl frac frcc frfc frla laaa laac laal laar laca lacc lacl lafc laff lala lall lara larc larf larr lcac lcca lccc lcfc lcfr lcra lcrl lfca lfcc llcc lllc llll lrac lral lrfc lrrc lrrr raaf rac- raca racc rafa rafc raff rala ralf rall rara rarf rcac rcaf rccc rcfc rffc rffl rrfc rrrr