a-ak a-be a-ha aaaa aaab aaac aaae aaah aaar aaba aabb aabc aabh aaca aacb aacc aace aach aack aacr aaea aaec aaha aahk aaka aake aara aarc aare abaa abab abac abae abak abar abb- abba abbb abbe abbr abca abcb abcc abch abcr abec abee aber abha abhr abra abrc acaa acab acac acae acar acba acca accc acce acch ace- acea acec aceh acek acer acha ache achh achr acke acr- acra acrc acre acrr aeac aecb aeer aeka aer- aera aerc ahab ahac ahah ahar ahha ahra ahrc ahre ahrr akaa akae akah akar akca akee aker akha akka akr- akra akre arab arac arae arah arak arar arba arbe arbh arc- arca arce arch area arec aree areh arek arh- arka arke arkh arr- arra arrc arre arrh arrk arrr baaa baah baak baar baba babb babe babr bac- baca bacc bace bach back baek baer baha bahr bak- baka bake bakh bakr bar- bara barb barc bare barh bark barr bbbb bbch bbeb bbrc bcaa bcar bcbc bcca bccc bcec bcer bche bcra beah beak bear beba bebb bebe beca bech beck beeb beek beer behr beka beke bera berc bere berk berr bhar bhca bhcc bher bhra brab brac brae brah brak brca brcb brce brea breb brec bree brek brer brka brkb brrr caaa caab caac caah caba cabe cac- caca cacc cace cach cack cacr caec caer caha cahe caka cake cara carb carc care cark carr cbac cbar cbbc cbca cbcc cbce cbcr cbea cbec cbee cber cbha cbka cbkr cbre cbrh ccaa ccab ccac ccar ccba ccbc ccca cccb cccc ccee ccha cche cchr ccra ccrc ccre ceac cear ceba cec- ceca cece ceeb ceec ceke cer- cera cerc cere chaa chab chac chae chah chak char chca chce chch chea cheb chec chee cheh chek cher chha chka chkb chra chrb chrc chrr ckac ckbc ckbe ckch ckck cker ckrc crab crac crar crbc crca crcc crce crcr cre- crea creb crec cree creh crkc eaba eabh eaca eacc each eaec eara earb eare earh ebac ebba ebbc ebbr ebcc eber ecaa ecac ecar ecbc ecbe ecca eccb eccc ecce echa eche ecka ecra ecrc ecrr eeca eeea eeee eeka eeke eera eerc ehaa ehcc ehea eheh eher ehre eka- ekab ekch ekeb ekek eker ekka erba erbb erbe erca ercc erce erch ereb erec erer erhc erke erra errc erre haab haak haar haba habe hace hack haec haha haka hake hakk hara harc hare harh hark harr hbar hcbc hcca hccb hccc hcch heah hear hebb hebe hebr heca hech heck heeb heek heer hehe heka heke hera herb herc here herk herr hhaa hhhh hkcc hrac hree hrrc kaaa kaab kaak kaar kaba kabb kabc kabe kabr kacb kacc kace kach kaeh kaer kaha kahc kahe kahr kaka kakc kake kakh kakk kara karb kare kark karr kbaa kbab kbac kbae kbak kbar kbba kbbb kbbc kbbe kbbk kbbr kbca kbcb kbce kbch kbck kbcr kbeb kbec kbee kbeh kbek kber kbhb kbhc kbhe kbhh kbhr kbkb kbkk kbkr kbra kbrb kbrc kbre kbrh kbrk kcaa kcab kcac kcah kcar kcba kcbc kcbk kcbr kcca kccb kccc kcck kccr kcea kceb kcec kcee kcha kche kchh kchk kchr kckc kckk kckr kcrc kcrh kcrr kea- keak kear keba kebb kebc kebe kebr keca kech keck kecr keeh keek keer kehk kehr keka kekb kekc keke ker- kera kerb kerc kere kerk kerr khab khac khak khar khbc khbr khca khcb khcc khch khck kheb khec kher khhk khka khke khkk khkr khra khrk khrr kkaa kkac kkar kkba kkbb kkbe kkbr kkcb kkch kkck kkcr kkea kkha kkhb kkhh kkhk kkhr kkkk kkrb kkrc kkre kkrh kkrk kkrr krab krac krae krah krak krar krba krbb krbe krbk krbr krca krcb krcc krce krch krea kreb krec kree kreh krek krhc krka krkc krke krkh krkk krkr krrb krrc krre krrk krrr raab raak raba rabb rabe rabk rac- raca racc race rach rack raec raer raha rahe rahr raka rake rakk rara rarb rare rark rbbb rbbr rcac rcbc rccb rccc rchb rea- reac reae reak rear reba rebb rebe rebk reca recc rece rech reck recr reeb reek reha rehb rehe reka reke rera rere rhae rhce rhea rheb rhee rrah rrrr