a-be a-ha aaaa aaab aaac aaad aaae aaah aaar aaba aabb aabc aabd aabh aaca aacb aacc aacd aace aach aacr aada aadc aade aaea aaec aaha aara aarc aard aare abaa abab abac abad abae abar abb- abba abbb abbe abbr abca abcb abcc abcd abch abcr abda abec abed abee aber abha abhr abra abrc acaa acab acac acad acae acar acba acca accc accd acce acch acda acdb acdc acde ace- acea acec aced aceh acer acha ache achh achr acr- acra acrc acre acrr adaa adab adac adad adae adah adar adba adbc adcc adda addc addd adde addr adea adeb adee adeh ader adha adhd adra adre aeac aecb aede aeer aer- aera aerc aerd ahab ahac ahad ahah ahar ahed ahha ahra ahrc ahre ahrr arab arac arad arae arah arar arba arbe arbh arc- arca arce arch arda ardc arde area arec ared aree areh arh- arr- arra arrc arre arrh arrr baaa baad baah baar baba babb babe babr bac- baca bacc bace bach bada badb badd bade badh badr baed baer baha bahr bar- bara barb barc bard bare barh barr bbad bbbb bbch bbdd bbeb bbrc bcaa bcar bcbc bcca bccc bcda bcde bcec bcer bchd bche bcra bd-r bdbc bddc bddh bead beah bear beba bebb bebe beca bech beda bede beeb beed beer behr bera berc berd bere berr bhar bhca bhcc bher bhra brab brac brad brae brah brca brcb brce brda brea breb brec bred bree brer brrr c-cd caaa caab caac caah caba cabe cac- caca cacc cace cach cacr cada cadc cadd cade cadr caec caer caha cahe cara carb carc card care carr cbac cbar cbbc cbca cbcc cbce cbcr cbdb cbdc cbea cbec cbee cber cbha cbrd cbre cbrh ccaa ccab ccac ccad ccar ccba ccbc ccca cccb cccc ccdc ccdh ccdr cced ccee ccha cche cchr ccra ccrc ccre cd-e cd-r cdaa cdac cdad cdba cdda cddb cddr cdec cder cdre ceac cead cear ceba cec- ceca cece ceda cedd cede ceeb ceec cer- cera cerc cerd cere chaa chab chac chad chae chah char chca chce chch chea cheb chec ched chee cheh cher chha chra chrb chrc chrd chrr crab crac crar crbc crca crcc crce crcr crda crdc cre- crea creb crec cred cree creh daab daad daae daar daba dabb daca dace dada dade daeb daer daha dahe dara darb darc dard dare darr dbar dbcc dcbc dcca dccb dccc dcdb dche dcra dddd ddrc ddre deac dead deae dear deba debe dec- deca decc decd dece deda dedd dede deeb deed deer deha der- dera derb derc dere derr dhaa dhad dhar dhec dhed dhee dher draa drab drac drad drar drba drbc drca drda drea dred dree dreh drra eaba eabh eaca eacc each eada eadb eadd eaec eara earb eard eare earh ebac ebba ebbc ebbr ebcc ebed eber ecaa ecac ecad ecar ecbc ecbe ecca eccb eccc ecce ecdc eced echa eche ecra ecrc ecrr edac edad edah edar edca edda eddc edde ede- edea edeh eder edra eeca eede eeea eeee eera eerc ehaa ehcc ehdd ehea eheh eher ehre erad erba erbb erbe erca ercc erce erch erda erde ereb erec ered erer erhc erra errc erre haab haad haar haba habe hace hada hade hadh haec haed haha hara harc hard hare harh harr hbar hbcd hcbc hcca hccb hccc hcch hcdr hcrd hdca hdda hdra head heah hear hebb hebe hebr heca hech heda hedd hede heeb heed heer hehe hera herb herc herd here herr hhaa hhhh hrac hrad hrdc hree hrrc raab raad raba rabb rabe rac- raca racc race rach rada radc radd rade radh radr raec raed raer raha rahe rahr rara rarb rare rbbb rbbr rcac rcbc rccb rccc rcdc rcde rchb rcrd rdac rder rea- reac read reae rear reba rebb rebe reca recc recd rece rech recr reda redc redd rede redh redr reeb reed reha rehb rehe rera rerd rere rhae rhce rhea rheb rhee rrad rrah rred rrrr