a-ha aaaa aaac aaaf aaah aaar aaca aacc aacf aach aacr aafa aafc aaff aagh aaha aara aarc acaa acac acag acar acca accc accf acch acfc acga acgr acha achh achr acr- acra acrc acrr afaa afar afca afcc afch affa affc afgf afgh afr- afra afrc agac agag agar agca agcc agfa agga agha agra ahac ahah ahar ahfa ahha ahra ahrc ahrr arac araf arag arah arar arc- arca arch arfa arfc arff arga argh arh- arr- arra arrc arrg arrh arrr caaa caac caaf caah cac- caca cacc cach cacr cafa cafc caff caga cagg cagr caha cara carc carf carr ccaa ccac ccaf ccag ccar ccca cccc cccf ccfa ccfc ccff ccga ccgc ccha cchr ccra ccrc ccrf ccrg cfaa cfac cfar cfca cfcf cffr cfra cfrg cgac cgcc cgcg cgfc chaa chac chaf chag chah char chca chch chfa chfc chfr chha chra chrc chrf chrr crac craf crag crar crca crcc crcr crfc faaa faac faah faca facc fach fafa fafc faff fafg fagg faha fahr fara farc farg farr fcar fcca fccf fcch fcra ffar ffcc ffff ffrr frac frag frcc frfc gaar gach gafa gafc gaff gaga gagg gaha gara garf garg garr gc-c gcaa gccc gccf gcfc gcrg gfcf gffa gfha ggfg gggg gghg ghar ghrf grac graf grcc grfa grrr haaf haag haar haff hag- haga hagg hagh haha hara harc harf harh harr hcca hccc hcch hcfa hcfc hcgh hgah hgar hgfc hggc hhaa hhgg hhhh hrac hrfc hrrc raaf raag rac- raca racc rach rafa rafc raff raga ragg ragh raha rahr rara rarf rcac rcaf rccc rcfc rcga rcgc rcrg rffc rhag rhcg rrah rrfc rrrr