aaaa aaab aaam aaas aaba aabb aabm aabt aama aamb aamo aams aaoo aasa aasm aass aast aata aatt abaa abab abam abas abat abb- abba abbb abbo abbs abbt abma abmb abms abmt aboa abob aboo abos abot abs- absa abss abta abts amaa amam amas amat amb- amba ambo ambs amm- amma ammo amob amoo amos amot amsa amso amss amst amta amto amts aoba aoma aoss asaa asab asam asao asas asat asba asbm asbo asma asmm asms asmt asob asom asos asot assa asso asss asst asta astb astm asto asts at-t ataa atab atas atat atbs atm- atma atmo atms atob atom atos atot atsb atst atta atto atts baaa baam baas baat baba babb babm babo babs bama bamb bamm bams baos basa baso bass bast bata bato bats batt bbas bbbb bbbs bmaa bmts boab boas boat boba bobb bobo bobs boma bomb boms bomt boob boom boos boot bosa bosm boso boss bost bota botb boto bots bott bsaa bsam bsas bsat bsms bsmt bsos bssm bsts btaa btob btss bttb maaa maam maas maat maba mabo mabs mama mamo mams maos masa mass mast mata mato mats matt mbam mbas mbba mbbs mbms mbta mmaa mmab mmas mmmm mmms mmst mmts moaa moab moam moas moat moba mobb mobo mobs moma momo moms mooa moob moos moot mosa moso moss most mota motb motm moto mots mott msaa msas msat msba msma msmb msmm msms msoa mssa mssm msst msta msts mtaa mtab mtas mtbo mtbs mtoa mtom mtsa mtss mtst mtts oama oams oass oast oats obas obba obbo obos obot obss obst obts omam omao omas ombo omma omo- omoa omoo omsa ooaa ooba ooma ooms oooo ooos oosa oost ootb oots osam osas osat osba osm- osmo osoo osos ossa ossb osso osta osts otas otbs otma oto- otoo otos otsa otso otta otto otts s-os saab saam saas saat saba sabb sabo sabs sam- sama samm samo sams samt saos sasa sasm saso sass sast sata satb sato sats satt sbaa sbas sbbs sbma sbot sbsa sbst smaa smas smat smba smos smot smss soam soas soat soba sobo sobs sobt soma somb somm somo soom soos soot sosa soso soss sost sota sotm soto sots ssaa ssab ssam ssao ssas ssat ssot sssa sssb sssm ssss ssta sstb ssts stab stam stas stat stbs stms stmt stoa stob stom stoo stos stot stsm stss t-mo taa- taas taat taba tabb tabo tabs tama tamm tamo tams taoa taom taos tasa tasb tasm tass tast tata tatb tato tats tatt tbas tbbs tbst tbta tmaa tmos tmsa tmtt toab toam toas toat toba tobo tobs tobt toma tomb tomm tomo toms tomt tooa toom toos toot tosa tosb toso toss tost tota totm toto tots tott tsaa tsam tsao tsat tsob tsom tsos tssa tssm tsst tstm tsts ttab ttbb ttma ttms ttss tttt