a-ha aaaa aaac aaae aaaf aaah aaar aaca aacc aace aacf aach aacr aaea aaec aafa aafc aaff aaha aara aarc aare acaa acac acae acar acca accc acce accf acch ace- acea acec aceh acer acfc acfe acha ache achh achr acr- acra acrc acre acrr aeac aeaf aeer aer- aera aerc afaa afar afca afcc afch afee afer affa affc afr- afra afrc afre ahac ahah ahar ahfa ahha ahra ahrc ahre ahrr arac arae araf arah arar arc- arca arce arch area arec aree aref areh arfa arfc arff arh- arr- arra arrc arre arrh arrr caaa caac caaf caah cac- caca cacc cace cach cacr caec caer cafa cafc cafe caff caha cahe cara carc care carf carr ccaa ccac ccaf ccar ccca cccc cccf ccee ccfa ccfc ccff ccha cche cchr ccra ccrc ccre ccrf ceac cear cec- ceca cece ceec cef- cefa cefc cer- cera cerc cere cerf cfaa cfac cfae cfar cfca cfcf cffr cfra cfre chaa chac chae chaf chah char chca chce chch chea chec chee chef cheh cher chfa chfc chfr chha chra chrc chrf chrr crac craf crar crca crcc crce crcr cre- crea crec cree creh crfc eaaf eaca eacc each eaec eara eare earh ecaa ecac ecar ecca eccc ecce ecef ecfa ecfc ecfr echa eche ecra ecrc ecrf ecrr eeca eeea eeee eefa eefe eera eerc efca effa ehaa ehcc ehea eheh eher ehre eraf erca ercc erce erch erec erer erfc erhc erra errc erre faaa faac faah faca facc face fach fafa fafc fafe faff faha fahr fara farc fare farr fcar fcca fccf fcch fcra feaf fear fece fech feer fefc fefe feff fehr fera ferc fere ferr ffar ffcc ffee ffff ffrr frac frae frcc frea free frfc haaf haar hace haec hafe haff haha hara harc hare harf harh harr hcca hccc hcch hcfa hcfc heaf heah hear heca hech heef heer hefe hehe hera herc here herr hfce hhaa hhhh hrac hree hrfc hrrc raaf rac- raca racc race rach raec raef raer rafa rafc rafe raff raha rahe rahr rara rare rarf rcac rcaf rccc rcfc rea- reac reae reaf rear reca recc rece rech recr reef refe reff refr reha rehe rera rere rfae rfef rffc rhae rhce rhea rhee rrah rrfc rrrr