a-wa aaaa aaab aaar aaas aaba aabb aabt aabw aaoo aaow aara aaro aars aart aasa aass aast aata aatt aatw aawt aaww abaa abab abar abas abat abaw abb- abba abbb abbo abbr abbs abbt aboa abob aboo abor abos abot abow abra abro abrs abs- absa abss absw abta abts abwa abwr aoba aora aorb aors aort aoss arab arar aras arat araw arba arbs aroa arob aroo aror aros arow arr- arra arro arrr arrs arrt ars- arsa arso arst arta arto artr arts arwa asaa asab asao asar asas asat asba asbo asob asor asos asot asow asra asro asrs assa asso assr asss asst asta astb asto astr asts at-t ataa atab atar atas atat atbs atob ator atos atot atra atro atsb atst atta atto attr atts atwa atwo atws atwt awar awas awoo awow awro awss awst awts awwa awws baaa baar baas baat baba babb babo babr babs baos bar- bara barb baro barr bars bart basa baso bass bast bata bato bats batt baw- baws bbas bbbb bbbs bbwr bbws boab boar boas boat boba bobb bobo bobs bobw boob boor boos boot boow bor- bora boro borr bors bort borw bosa boso boss bost bota botb boto bots bott botw bowa bowr bows bowt brab brao bras brat braw broa brob broo bror bros brot brow brrr brrs brsb brsr brst bsaa bsas bsat bsaw bsos bsra bsts btaa btob btor btrt btss bttb btwo bwaa oara oars oass oast oats obas obba obbo obor obos obot obra obro obsr obss obst obts ooaa ooba oooo ooos oora oort oosa oost ootb oots ootw orab orao orar oras orat orba orbb orbo orbs oro- oror oros orot orra orro orrs orsa orso orta orto orts orwa orwo osar osas osat osba osoo osor osos osow osro ossa ossb osso osta ostr osts otar otas otbs oto- otoo otor otos otow otra otro otrs otsa otso otta otto otts otwo owar owow owsa owt- owtt owwa raab raas raat raba rabb rabo rabs raob raos rara rarb raro rars rasa raso rass rast rata rato rats ratt rawa rawr raws raww rbbb rbbr rbbs rbss rbst roab roar roas roat rob- roba robb robo robs robt roob roor roos root rora roro rort rosa roso ross rost rota roto rotr rots rott rowa rowb rowr rows rowt roww rras rrat rrrr rsaa rsos rssa rsts rtas rtss rtts s-os saab saar saas saat saba sabb sabo sabr sabs saor saos sara saro sarr sars sart sasa saso sass sast sata satb sato satr sats satt sawa saws sawt sbaa sbar sbas sbbs sbor sbot sbsa sbst sbwr soar soas soat soaw soba sobo sobr sobs sobt soor soos soot sora sorb soro sorr sors sort sosa soso soss sost sota soto sots sotw sowa sowr sows sowt sras sraw sros srta srtr ssaa ssab ssao ssas ssat ssaw ssbr ssot ssra ssrs sssa sssb ssss ssta sstb ssts ssws stab star stas stat staw stbs stoa stob stoo stor stos stot stow stra stro strs stss sttr swab swar swas swat swbs swbw swob swoo swor swot swow swss swts taa- taar taas taat taba tabb tabo tabs taoa taor taos tara tarb taro tarr tars tart tasa tasb tasr tass tast tata tatb tato tatr tats tatt tawa tawo taws tawt taww tbar tbas tbbs tbrb tbst tbta toab toas toat toaw toba tobo tobs tobt tooa toor toos toot tora toro torr tors tort tosa tosb toso toss tost tota toto totr tots tott towa tows traa trab trao tras trat traw troa troo tros trot trow trra trst trtr tsaa tsao tsar tsat tsob tsos tssa tssr tsst tsts tswa ttab ttbb ttss tttt twas twat twbt two- twoa twob twoo twos twot twss waaa waao waar waas waat waaw waba wabb wabo wabr wabs wabt wabw waob waoo waor waos waow war- wara warb waro warr wars wart warw wasa wasb waso wasr wass wast wata watb wato watr wats watt watw wawa wawb wawo waws wawt wbaa wbab wbar wbat wbbb wbbo wbbr wbbs wbbt wbbw wbob wbor wbos wbow wbrb wbrr wbrs wbrt wbrw wbsa wbsb wbsr wbss wbst wbsw wbta wbto wbtr wbts wbtt wbtw wbwb wbwo wbwt woaa woab woar woas woat woba wobb wobo wobt woob woos woot woow wora worb woro worr wors wort worw wosa woso woss wost wosw wotb wotr wots wott wotw wowb wowo wows wowt woww wraa wrab wrao wrar wras wrat wraw wrba wrbb wrbo wrbs wrbt wrbw wroa wrob wroo wros wrot wrow wrra wrrb wrro wrrs wrrw wrsa wrsb wrso wrsr wrss wrsw wrta wrtb wrto wrtr wrts wrtw wrwa wrwb wrwr wsaa wsar wsat wsba wsbb wsbr wsbs wsbt wsbw wsob wsoo wsor wsos wsra wsrb wsro wsrs wsrt wsrw wssr wsss wsst wssw wsta wstb wsto wstr wsts wstt wstw wswb wswr wsws wswt wsww wtab wtar wtaw wtbb wtbo wtbr wtbs wtob wtor wtot wtow wtrb wtro wtrs wtrt wtrw wtsa wtsb wtso wtsr wtss wtta wttb wtto wttr wtts wttt wttw wtwa wtwb wtwo wtwr wtws wtwt wtww wwab wwba wwbb wwbr wwbt wwor wwos wwot wwow wwra wwrb wwrr wwrw wwsb wwsr wwss wwst wwta wwtr wwtw wwwa wwwr wwws wwww