a-do a-ha aaaa aaab aaad aaah aaar aaba aabb aabd aabh aada aaha aaoo aara aard aaro abaa abab abad abar abb- abba abbb abbo abbr abda abdo abha abho abhr aboa abob abod aboh aboo abor abra abro adaa adab adad adah adao adar adba adda addd addo addr adha adhd adho adob adod adoo ador adra adro ahab ahad ahah ahar ahha ahoa ahod ahor ahra ahrr aoah aoba aodh aora aorb arab arad arah arar arba arbh arda ardo arh- aroa arob arod aroo aror arr- arra arrh arro arrr baaa baad baah baar baba babb babo babr bada badb badd badh bado badr baha baho bahr baoh bar- bara barb bard barh baro barr bbad bbbb bbdd bbdo bd-r bddh bhao bhar bhor bhra boab boad boar boba bobb bobo boda bodb bodh bodo boha bohd boho bohr boob bood booh boor bor- bora bord borh boro borr brab brad brah brao brda brdo broa brob brod broh broo bror brrr d-bo daab daad daar daba dabb dabo dada dado daha dara darb dard daro darr dbar dddd dhaa dhad dhao dhar dhod dhor doab doar doba dobb dod- doda dodd dodo doha dohr doob dood door dora dord doro dorr draa drab drad drar drba drda drob drod droh drra haab haad haar haba habo hada hadh haha haho haor hara hard harh haro harr hbar hdda hdod hdra hhaa hhhh hoad hoar hoba hobo hoda hodh hodr hoha hoho hood hoor hora hord horo horr hrad hrob hrod oara obad obba obbo obor obra obrh obro odah odbo odda oddd odoh odoo odor odra ohad ohba ohho ohob ohoh ohra ooaa ooba ooda ooha ooho oooh oooo oora oord orab orad orah orao orar orba orbb orbo orda ordo oro- oror orra orro raab raad raba rabb rabo rada radd radh rado radr raha rahr raob raoh rara rarb raro rbbb rbbr rboh rhoa rhob rhod rhoh roab road roar rob- roba robb robo roda rodd rodo roha rohr roob rood roor rora roro rrad rrah rrrr