a-ak a-be a-ha aaaa aaab aaac aaad aaae aaah aaba aabb aabc aabd aabh aaca aacb aacc aacd aace aach aack aada aadc aade aaea aaec aaha aahk aaka aake abaa abab abac abad abae abak abb- abba abbb abbe abca abcb abcc abcd abch abda abec abed abee abha acaa acab acac acad acae acba acca accc accd acce acch acda acdb acdc acde ace- acea acec aced aceh acek acha ache achh ackd acke adaa adab adac adad adae adah adak adba adbc adcc adda addc addd adde adea adeb adee adeh adha adhd aeac aecb aede aeka ahab ahac ahad ahah ahed ahha akaa akae akah akca aked akee akha akka baaa baad baah baak baba babb babe bac- baca bacc bace bach back bada badb badd bade badh baed baek baha bak- baka bake bakh bbad bbbb bbch bbdd bbeb bcaa bcbc bcca bccc bcda bcde bcec bchd bche bdbc bddc bddh bead beah beak beba bebb bebe beca bech beck beda bede beeb beed beek beka beke bhca bhcc c-cd caaa caab caac caah caba cabe cac- caca cacc cace cach cack cada cadc cadd cade caec caha cahe caka cake cbac cbbc cbca cbcc cbce cbdb cbdc cbea cbec cbee cbha cbka ccaa ccab ccac ccad ccba ccbc ccca cccb cccc ccdc ccdh cced ccee ccha cche cd-e cdaa cdac cdad cdba cdda cddb cdec ceac cead ceba cec- ceca cece ceda cedd cede ceeb ceec ceke chaa chab chac chad chae chah chak chca chce chch chea cheb chec ched chee cheh chek chha chka chkb ckac ckbc ckbe ckch ckck daab daad daae daba dabb daca dace dada dade daeb daha dahe daka dake dbcc dcbc dcca dccb dccc dcdb dche dddd deac dead deae deak deba debe dec- deca decc decd dece deck deda dedd dede deeb deed deek deha dek- deka deke dekh dhaa dhad dhak dhec dhed dhee dkba dkdc eaba eabh eaca eacc each eada eadb eadd eaec ebac ebba ebbc ebcc ebed ecaa ecac ecad ecbc ecbe ecca eccb eccc ecce ecdc eced echa eche ecka edac edad edah edca edda eddc edde ede- edea edeh eeca eede eeea eeee eeka eeke ehaa ehcc ehdd ehea eheh eka- ekab ekch ekeb eked ekek ekka haab haad haak haba habe hace hack hada hade hadh haec haed haha haka hake hakk hbcd hcbc hcca hccb hccc hcch hdbk hdca hdda head heah hebb hebe heca hech heck heda hedd hede heeb heed heek hehe heka heke hhaa hhhh hkcc kaaa kaab kaak kaba kabb kabc kabd kabe kacb kacc kacd kace kach kad- kada kadd kade kaeh kaha kahc kahe kaka kakc kake kakh kakk kbaa kbab kbac kbad kbae kbak kbba kbbb kbbc kbbd kbbe kbbk kbca kbcb kbce kbch kbck kbdb kbde kbeb kbec kbed kbee kbeh kbek kbhb kbhc kbhe kbhh kbkb kbkk kcaa kcab kcac kcad kcah kcba kcbc kcbd kcbk kcca kccb kccc kccd kcck kcda kcdc kcdd kcea kceb kcec kced kcee kcha kche kchh kchk kckc kckk kdaa kdab kdac kdad kdae kdak kdbb kdca kdcc kdcd kdce kddb kddc kddd kddk kdeb kdec kdka kdkb kdkd kdkk kea- kead keak keba kebb kebc kebe keca kech keck keda kedb kedc kedd kede keed keeh keek kehk keka kekb kekc keke khab khac khad khak khbc khbd khca khcb khcc khch khck khdc khdk kheb khec khed khhk khka khke khkk kkaa kkac kkba kkbb kkbd kkbe kkcb kkcd kkch kkck kkda kkdc kkdd kkea kked kkha kkhb kkhh kkhk kkkk