a-ya a-yo aaaa aaab aaas aaba aabb aabt aaby aaoo aasa aass aast aata aatt abaa abab abas abat abay abb- abba abbb abbo abbs abbt abby aboa abob aboo abos abot aboy abs- absa abss abta abts abys abyt abyy aoba aoss asaa asab asao asas asat asay asba asbo asby asob asos asot assa asso asss asst assy asta astb asto asts asty asya at-t ataa atab atas atat atay atbs atob atos atot atoy atsb atst atta atto atts atty atya atys ay-o ayao ayas ayat ayay ayoo ayos ayot ayta ayto ayya baaa baas baat baba babb babo babs baby baos basa baso bass bast bata bato bats batt baty baya bayo bays bayt bbas bbay bbbb bbbs bboy bbyo boab boas boat boba bobb bobo bobs boby boob boos boot bosa boso boss bost bota botb boto bots bott boty boya boyo boys bsaa bsas bsat bsos bsts btaa btob btss bttb byas byoa byob byos bysb byso byss byst bysy byts oass oast oasy oats oaty obas obay obba obbo obby obos obot oboy obss obst obts ooaa ooba ooby oooo ooos oosa oost ootb oots ooty osas osat osay osba osby osoo osos ossa ossb osso ossy osta osts osyt otas otay otbs oto- otoo otos otoy otsa otso otta otto otts oyas oyss oyst s-os saab saas saat saba sabb sabo sabs saos sasa saso sass sast sata satb sato sats satt saya sayo says sbaa sbas sbbs sbot sbsa sbst soas soat soay soba sobo sobs sobt soos soot sooy sosa soso soss sost sota soto sots soya soyo soys soyt ssaa ssab ssao ssas ssat ssby ssot sssa sssb ssss ssta sstb ssts stab stas stat stay stbs stoa stob stoo stos stot stoy stss stys sybo syso syss syst sytt taa- taas taat taba tabb tabo tabs taby taoa taos tasa tasb tass tast tasy tata tatb tato tats tatt taty taya tayo tays tayt tayy tbas tbbs tbst tbta to-y toab toas toat toay toba tobo tobs tobt toby tooa toos toot tosa tosb toso toss tost tosy tota toto tots tott toty toya toyb toyo toys toyt tsaa tsao tsat tsob tsos tsoy tssa tsst tsts tsys ttab ttbb ttoy ttss tttt ttys tyas tybo tysa tyss tyst tyta tyto tytt tyty yaas yaba yabo yasa yaso yass yast yata yats yaya yayo yays ybas ybbs yoba yobo yobs yoot yoso yost yota yott yoyo ysay ysby ysyb ytay yyyy