a-ha aaaa aaab aaah aaas aaba aabb aabh aabt aaha aahs aaoo aasa aass aast aata aatt abaa abab abas abat abb- abba abbb abbo abbs abbt abha abho abhs aboa abob aboh aboo abos abot abs- absa abss abta abts ahab ahah ahas ahat ahha ahhs ahoa ahot ahsa ahso ahss ahta ahto ahts aoah aoba aoss asaa asab asah asao asas asat asba asbo asha ashs asht asob asos asot assa assh asso asss asst asta astb asto asts at-t ataa atab atas atat atbs atha atho aths atob atos atot atsb atst atta atto atts baaa baah baas baat baba babb babo babs baha baho bahs baht baoh baos basa bash baso bass bast bata bath bato bats batt bbas bbbb bbbs bbhs bhao bhat bhhs bhot boab boas boat boba bobb bobo bobs boha boho bohs boht boob booh boos boot bosa bosh boso boss bost bota botb both boto bots bott bsaa bsas bsat bshs bsos bsts btaa bths btob btss bttb haab haas haat haba habo habs habt haha haho hahs haht hasa hash hass hast hata hatb hath hato hats hatt hbbs hbhs hbos hbss hhaa hhat hhhh hhhs hoas hoat hoba hobo hobs hoha hoho hoos hoot hosa hosh hoss host hota hotb hoth hoto hots hott hsas hsat hshs hsob hsts htab hths htoh oahs oass oast oath oats obas obba obbo obhs obos obot obss obst obts ohba ohho ohhs ohob ohoh ohos ohso ohss ohta ohto ooaa ooba ooha ooho oohs oooh oooo ooos oosa oost ootb oots osas osat osba osha osho oshs osoo osos ossa ossb osso osta osts otas otbs otha otho oths oto- otoh otoo otos otsa otso otta otto otts s-os saab saah saas saat saba sabb sabo sabs saha saho sahs saht saos sasa sash saso sass sast sata satb sato sats satt sbaa sbas sbbs sbhs sbot sbsa sbst shab shah shao shas shat shbs shbt shha shhh shhs shoa shoo shos shot shts soas soat soba sobo sobs sobt soha sohh soho sohs soos soot sosa sosh soso soss sost sota soth soto sots ssaa ssab ssao ssas ssat sshs ssot sssa sssb sssh ssss ssta sstb ssth ssts stab stas stat stbs sths stoa stob stoo stos stot stss taa- taas taat taba tabb tabo tabs taha taho tahs taoa taos tasa tasb tash tass tast tata tatb tath tato tats tatt tbas tbbs tbhs tbst tbta thaa thao thas that thbs thoo thos thot thss thtb thts toab toas toat toba tobo tobs tobt toho tooa tooh toos toot tosa tosb tosh toso toss tost tota toth toto tots tott tsaa tsao tsat tshb tshs tsob tsos tssa tsst tsts ttab ttbb ttss tttt