-ous aaaa aaab aaas aaba aabb aabt aaoo aasa aass aast aasu aata aatt aaus abaa abab abas abat abau abb- abba abbb abbo abbs abbt aboa abob aboo abos abot abou abs- absa abss absu abta abts abtu abua abus abut aoba aoss aous aout asaa asab asao asas asat asau asba asbo asbu asob asos asot asou assa asso asss asst assu asta astb asto asts asub asus at-t ataa atab atas atat atbs atob atos atot atsb atst atta atto atts attu atua atub atus auaa ausa aust ausu aut- auto auts baaa baas baat baba babb babo babs babu baos basa baso bass bast basu bata bato bats batt batu bau- bbas bbau bbbb bbbs boab boas boat boba bobb bobo bobs bobu boob boos boot bosa boso boss bost bosu bota botb boto bots bott boua bous bout bsaa bsas bsat bsos bsts btaa btob btss bttb btus buat buba bubb bubo bubs bubu busa buss bust busu but- buta buto buts butt buus oaau oass oast oats obas obba obbo obos obot obss obst obts obus ooaa ooba oooo ooos oosa oost ootb oots oous osas osat osba osoo osos ossa ossb osso ossu osta osts otas otbs oto- otoo otos otsa otso otsu otta otto otts ottu otus ouat oubs ousa oust out- outa outb outo outs ouu- s-os saab saas saat saba sabb sabo sabs sabu saos saou sasa saso sass sast sata satb sato sats satt satu saua saus saut sbaa sbas sbbs sbot sbsa sbst sbus soas soat soba sobo sobs sobt sobu soos soot sosa soso soss sost sota soto sots sotu sous sout ssaa ssab ssao ssas ssat ssau ssot sssa sssb ssss ssta sstb ssts stab stas stat stau stbs stoa stob stoo stos stot stou stss stub stus stut suas suat sub- suba subb subo subs suos sus- susa suso suss sust susu suta suto sutu suus taa- taas taat taba tabb tabo tabs tabu taoa taos taou tasa tasb tass tast tasu tata tatb tato tats tatt tatu taua taub taus taut tbas tbbs tbst tbta toab toas toat toau toba tobo tobs tobt tobu tooa toos toot tosa tosb toso toss tost tosu tota toto tots tott tous tout tsaa tsao tsat tsau tsob tsos tsou tssa tsst tsts ttab ttbb ttss tttt tuao tuas tuat tuba tubb tubo tubs tubu tuos tusa tuss tust tuta tuto tuts tutt tutu tuuo uasa uata uatu uaua ubba ubbo ubos us-a usaa usas usat usba usbs usos ussa ussb usss usst ussu usta ustb usto usts usua usus utas utau utsa utto uttu uuta uuuu