a-ha aaaa aaac aaae aaah aaar aaca aacc aace aach aacr aaea aaec aaha aara aarc aare acaa acac acae acar acca accc acce acch ace- acea acec aceh acer acha ache achh achr acr- acra acrc acre acrr aeac aeer aer- aera aerc ahac ahah ahar ahex ahha ahra ahrc ahre ahrr arac arae arah arar arax arc- arca arce arch area arec aree areh arex arh- arr- arra arrc arre arrh arrr axar axce axer caaa caac caah cac- caca cacc cace cach cacr caec caer caex caha cahe cara carc care carr carx caxa ccaa ccac ccar ccca cccc ccee ccha cche cchr ccra ccrc ccre ceac cear cec- ceca cece ceec cer- cera cerc cere cexe chaa chac chae chah char chax chca chce chch chea chec chee cheh cher chex chha chra chrc chrr crac crar crax crca crcc crce crcr cre- crea crec cree creh crex cxxx eaca eacc each eaec eara eare earh ecaa ecac ecar ecca eccc ecce echa eche ecra ecrc ecrr eeca eeea eeee eera eerc ehaa ehcc ehea eheh eher ehre er-x erca ercc erce erch erec erer erhc erra errc erre exa- exch exec exer exh- exrx haar hace haec haha hara harc hare harh harr haxe hcca hccc hcch heah hear heca hech heer hehe hera herc here herr hex- hexa hexe hhaa hhex hhhh hrac hree hrrc rac- raca racc race rach raec raer raha rahe rahr rara rare raxa rcac rccc rea- reac reae rear reca recc rece rech recr reha rehe rera rere rexx rhae rhce rhea rhee rhex rrah rrrr xaar xace xara xare xeer xer- xera xexe xxxx