aaaa aaac aaaf aaar aaca aacc aacf aacr aafa aafc aaff aara aarc acaa acac acag acar acca accc accf acfc acga acgr acr- acra acrc acrr afaa afar afca afcc affa affc afgf afr- afra afrc agac agag agar agca agcc agfa agga agra arac araf arag arar arc- arca arfa arfc arff arga arr- arra arrc arrg arrr caaa caac caaf cac- caca cacc cacr cafa cafc caff caga cagg cagr cara carc carf carr ccaa ccac ccaf ccag ccar ccca cccc cccf ccfa ccfc ccff ccga ccgc ccra ccrc ccrf ccrg cfaa cfac cfar cfca cfcf cffr cfra cfrg cgac cgcc cgcg cgfc crac craf crag crar crca crcc crcr crfc faaa faac faca facc fafa fafc faff fafg fagg fara farc farg farr fcar fcca fccf fcra ffar ffcc ffff ffrr frac frag frcc frfc gaar gafa gafc gaff gaga gagg gara garf garg garr gc-c gcaa gccc gccf gcfc gcrg gfcf gffa ggfg gggg grac graf grcc grfa grrr raaf raag rac- raca racc rafa rafc raff raga ragg rara rarf rcac rcaf rccc rcfc rcga rcgc rcrg rffc rrfc rrrr