a-a a-b a-t aaa aab aag aao aar aas aat aau aay ab- aba abb abg abo abr abs abt abu aby ag- aga agb agg ago agr ags agt agu agy aoa aob aog aoo aor aos aot aou ar- ara arb arg aro arr ars art aru ary as- asa asb asg aso asr ass ast asu asy at- ata atb atg ato atr ats att atu au- aua aub aug auo aur aus aut ay- aya ayo ayr ays ayt ayu b-u baa bab bag bao bar bas bat bau bay bba bbb bbg bbo bbr bbs bbt bbu bby bga bgb bgg bgo bgr bgs bgt bgu boa bob bog boo bor bos bot bou boy bra brb brg bro brr brs brt bru bry bsa bsb bsg bso bsr bss bst bsu bsy bta btb btg bto btr bts btt btu bty bua bub bug buo bur bus but buu buy by- bya byg byo byr bys byt byu gaa gab gag gao gar gas gat gau gay gba gbg gbo gbr gbs gbt gbu gby gga ggb ggg ggo ggr ggs ggt ggu goa gob gog goo gor gos got gou goy gra grb grg gro grr grs grt gru gry gsa gsb gsg gso gsr gss gst gsu gta gtb gtg gto gtr gts gtt gtu gty gu- gua gub gug guo gur gus gut guu guy gy- gya gyb gyo gyr gys oaa oab oag oao oar oas oat oau ob- oba obb obg obo obr obs obt obu oby oga ogg ogo ogs ogt ogy oo- ooa oob oog ooo oor oos oot or- ora orb org oro orr ors ort oru ory os- osa osb osg oso osr oss ost osu ot- ota otb otg oto otr ots ott otu ou- oua ouo our ous out oya oyo oys ra- raa rab rag rao rar ras rat rau ray rba rbb rbg rbo rbr rbs rbt rbu rga rgb rgg rgo rgr rgs rgt roa rob rog roo ror ros rot rou roy rra rrb rrg rrr rrs rrt rru rsa rsb rsg rso rsr rss rst rsu rta rtb rtg rto rtr rts rtt rtu rty rua rub rug ruo rur rus rut ruu ruy ry- rya ryg ryo ryr rys ryu ryy saa sab sag sao sar sas sat sau say sba sbb sbg sbo sbr sbs sbt sbu sby sga sgb sgg sgo sgr sgs sgt sgu soa sob sog soo sor sos sot sou soy sr- sra srb srg sro srr srs srt sry ss- ssa ssb ssg sso ssr sss sst ssu sta stb stg sto str sts stt stu sty sua sub sug suo sur sus sut suu suy sy- sya syb syg syr sys syt syu taa tab tag tao tar tas tat tau tay tba tbb tbg tbo tbr tbs tbt tbu tga tgb tgg tgo tgr tgs tgt tgu tgy to- toa tob tog too tor tos tot tou toy tra trb trg tro trr trs trt tru try tsa tsb tsg tso tsr tss tst tsu tsy tta ttb ttg tto ttr tts ttt ttu tty tua tub tug tuo tur tus tut tuu tuy tya tyg tyo tyr tys tyt ua- uaa uab uag uao uar uas uat uau uay uba ubb ubg ubo ubr ubs ubt ubu uby uga ugb ugg ugo ugr ugs ugt ugu uoa uob uog uoo uor uos uot ur- ura urb urg uro urr urs urt uru ury usa usb usg uso usr uss ust usu uta utb uto utr uts utt utu uty uua uug uur uus uut uuu uyo uys uyu yaa yab yag yao yar yas yat yau yay ybg ybr ybs yby yga ygo yob yog yoo yor yos yot you yoy yra yrg yro yrs yrt yru ysa ysb ysg yso ysr yss yst ysu ysy yta yto ytr yts ytt ytu yua yug yuo yur yus yut yuu yuy yyb yyg yys yyt yyu yyy