a-ha aaaa aaab aaah aaar aaas aaba aabb aabh aaha aahs aaoo aara aaro aars aasa aass abaa abab abar abas abb- abba abbb abbo abbr abbs abha abho abhr abhs aboa abob aboh aboo abor abos abra abro abrs abs- absa abss ahab ahah ahar ahas ahha ahhs ahoa ahor ahra ahrr ahrs ahsa ahso ahss aoah aoba aora aorb aors aoss arab arah arar aras arba arbh arbs arh- arhs aroa arob aroo aror aros arr- arra arrh arro arrr arrs ars- arsa arso asaa asab asah asao asar asas asba asbo asha ashs asob asor asos asra asro asrs assa assh asso assr asss baaa baah baar baas baba babb babo babr babs baha baho bahr bahs baoh baos bar- bara barb barh baro barr bars basa bash baso bass bbas bbbb bbbs bbhs bhao bhar bhhs bhor bhra boab boar boas boba bobb bobo bobs boha boho bohr bohs boob booh boor boos bor- bora borh boro borr bors bosa bosh boso boss brab brah brao bras brhs broa brob broh broo bror bros brrr brrs brsb brsr bsaa bsas bshs bsos bsra haab haar haas haba habo habs haha haho hahs haor hara harh haro harr hars hasa hash hass hbar hbbs hbhs hbos hbrs hbss hhaa hhhh hhhs hoar hoas hoba hobo hobs hoha hoho hoor hoos hora horo horr hors hosa hosh hoss hras hrhs hrob hros hrso hsas hshs hsob oahs oara oars oass obas obba obbo obhs obor obos obra obrh obro obsr obss ohba ohho ohhs ohob ohoh ohos ohra ohso ohss ooaa ooba ooha ooho oohs oooh oooo ooos oora oosa orab orah orao orar oras orba orbb orbo orbs orhs oro- oror oros orra orro orrs orsa orso osar osas osba osha osho oshs osoo osor osos osro ossa ossb osso raab raas raba rabb rabo rabs raha rahr rahs raob raoh raos rara rarb raro rars rasa rash raso rass rbbb rbbr rbbs rbhs rboh rbss rhhs rhoa rhob rhoh rhos roab roar roas rob- roba robb robo robs roha rohr rohs roob roor roos rora roro rosa rosh roso ross rrah rras rrhs rrrr rsaa rshs rsos rssa s-os saab saah saar saas saba sabb sabo sabr sabs saha saho sahr sahs saor saos sara sarh saro sarr sars sasa sash saso sass sbaa sbar sbas sbbs sbhs sbor sbsa shab shah shao shar shas shbs shha shhh shhs shoa shoo shor shos shrs soar soas soba sobo sobr sobs soha sohh soho sohs soor soos sora sorb sorh soro sorr sors sosa sosh soso soss sras srhs sros ssaa ssab ssao ssas ssbr sshs ssra ssrs sssa sssb sssh ssss