a-ha aaaa aaab aaad aaaf aaah aaar aaba aabb aabd aabh aada aafa aafb aafd aaff aaha aara aard abaa abab abad abaf abar abb- abba abbb abbr abda abff abha abhr abra adaa adab adad adah adar adba adda addd addr adfa adha adhd adra afaa afad afar afdb affa afr- afra ahab ahad ahah ahar ahfa ahha ahra ahrr arab arad araf arah arar arba arbh arda ardf arfa arfb arff arh- arr- arra arrh arrr baaa baad baaf baah baar baba babb babr bada badb badd badh badr baff baha bahr bar- bara barb bard barf barh barr bbad bbbb bbdd bd-r bddh bhar bhff bhra brab brad braf brah brda brrr daab daad daar daba dabb dada dafa daff daha dara darb dard darf darr dbar dddd dfaf dffa dfrf dhaa dhad dhar draa drab drad draf drar drba drda drra faaa faad faah faba fabd fada fadd fafa faff faha fahd fahr fara farb fard farr fbar ffar ffff ffrr frab frad haab haad haaf haar haba hada hadf hadh hafb hafd haff haha hara hard harf harh harr hbar hdda hdra hfba hhaa hhhh hrad raab raad raaf raba rabb rada radd radh radr rafa raff raha rahr rara rarb rarf rbaf rbbb rbbr rdfa rrad rrah rrrr