a-ha aaaa aaab aaah aaar aaas aaba aabb aabh aabt aaha aahs aaoo aara aaro aars aart aasa aass aast aata aatt abaa abab abar abas abat abb- abba abbb abbo abbr abbs abbt abha abho abhr abhs aboa abob aboh aboo abor abos abot abra abro abrs abs- absa abss abta abts ahab ahah ahar ahas ahat ahha ahhs ahoa ahor ahot ahra ahrr ahrs ahsa ahso ahss ahta ahto ahts aoah aoba aora aorb aors aort aoss arab arah arar aras arat arba arbh arbs arh- arhs aroa arob aroo aror aros arr- arra arrh arro arrr arrs arrt ars- arsa arso arst arta arth arto artr arts asaa asab asah asao asar asas asat asba asbo asha ashs asht asob asor asos asot asra asro asrs assa assh asso assr asss asst asta astb asto astr asts at-t ataa atab atar atas atat atbs atha atho aths atob ator atos atot atra atro atsb atst atta atto attr atts baaa baah baar baas baat baba babb babo babr babs baha baho bahr bahs baht baoh baos bar- bara barb barh baro barr bars bart basa bash baso bass bast bata bath bato bats batt bbas bbbb bbbs bbhs bhao bhar bhat bhhs bhor bhot bhra bhrt boab boar boas boat boba bobb bobo bobs boha boho bohr bohs boht boob booh boor boos boot bor- bora borh boro borr bors bort bosa bosh boso boss bost bota botb both boto bots bott brab brah brao bras brat brhs broa brob broh broo bror bros brot brrr brrs brsb brsr brst bsaa bsas bsat bshs bsos bsra bsts btaa bths btob btor btrt btss bttb haab haar haas haat haba habo habs habt haha haho hahs haht haor hara harh haro harr hars hart hasa hash hass hast hata hatb hath hato hats hatt hbar hbbs hbhs hbos hbrs hbss hhaa hhat hhhh hhhs hoar hoas hoat hoba hobo hobs hoha hoho hoor hoos hoot hora horo horr hors hort hosa hosh hoss host hota hotb hoth hoto hotr hots hott hras hrhs hrob hros hrso hrta hrtb hsas hsat hshs hsob hsts htab hths htoh htra httr oahs oara oars oass oast oath oats obas obba obbo obhs obor obos obot obra obrh obro obsr obss obst obts ohba ohho ohhs ohob ohoh ohos ohra ohso ohss ohta ohto ooaa ooba ooha ooho oohs oooh oooo ooos oora oort oosa oost ootb oots orab orah orao orar oras orat orba orbb orbo orbs orhs oro- oror oros orot orra orro orrs orsa orso orta orth orto orts osar osas osat osba osha osho oshs osoo osor osos osro ossa ossb osso osta ostr osts otar otas otbs otha otho othr oths oto- otoh otoo otor otos otra otro otrs otsa otso otta otto otts raab raas raat raba rabb rabo rabs raha rahr rahs raht raob raoh raos rara rarb raro rars rasa rash raso rass rast rata rath rato rats ratt rbbb rbbr rbbs rbhs rboh rbss rbst rhhs rhoa rhob rhoh rhos roab roar roas roat rob- roba robb robo robs robt roha rohr rohs roob roor roos root rora roro rort rosa rosh roso ross rost rota roth roto rotr rots rott rrah rras rrat rrhs rrrr rsaa rshs rsos rssa rsts rtas rths rtss rtts s-os saab saah saar saas saat saba sabb sabo sabr sabs saha saho sahr sahs saht saor saos sara sarh saro sarr sars sart sasa sash saso sass sast sata satb sato satr sats satt sbaa sbar sbas sbbs sbhs sbor sbot sbsa sbst shab shah shao shar shas shat shbs shbt shha shhh shhs shoa shoo shor shos shot shrs shts soar soas soat soba sobo sobr sobs sobt soha sohh soho sohs soor soos soot sora sorb sorh soro sorr sors sort sosa sosh soso soss sost sota soth soto sots sras srhs sros srta srtr ssaa ssab ssao ssas ssat ssbr sshs ssot ssra ssrs sssa sssb sssh ssss ssta sstb ssth ssts stab star stas stat stbs sths stoa stob stoo stor stos stot stra stro strs stss sttr taa- taar taas taat taba tabb tabo tabs taha taho tahr tahs taoa taor taos tara tarb taro tarr tars tart tasa tasb tash tasr tass tast tata tatb tath tato tatr tats tatt tbar tbas tbbs tbhs tbrb tbst tbta thaa thao thar thas that thbs thoo thor thos thot thra thro thsr thss thtb thtr thts toab toas toat toba tobo tobs tobt toho tooa tooh toor toos toot tora toro torr tors tort tosa tosb tosh toso toss tost tota toth toto totr tots tott traa trab trao tras trat trhs troa troo tros trot trra trst trtr tsaa tsao tsar tsat tshb tshs tsob tsos tssa tssr tsst tsts ttab ttbb ttss tttt