a-a a-b a-i a-t aaa aab aai aar aas aat aau aay ab- aba abb abi abr abs abt abu aby ai- aia aib aii air ais ait aiu aiy ar- ara arb ari arr ars art aru ary as- asa asb asi asr ass ast asu asy at- ata atb ati atr ats att atu au- aua aub aui aur aus aut ay- aya ayi ayr ays ayt ayu b-u baa bab bai bar bas bat bau bay bba bbb bbi bbr bbs bbt bbu bby bi- bia bib bii bir bis bit biu biy bra brb bri brr brs brt bru bry bsa bsb bsi bsr bss bst bsu bsy bta btb bti btr bts btt btu bty bua bub bui bur bus but buu buy by- bya byi byr bys byt byu ia- iaa iab iai iar ias iat iau iba ibb ibi ibr ibs ibt ibu iby iia iib iii iir iis iit iiu ir- ira irb iri irr irs irt iru iry is- isa isb isi isr iss ist isu isy ita itb iti its itt itu ity iu- iua iub iui iur ius iut iya iyr iys iyt iyy ra- raa rab rai rar ras rat rau ray rba rbb rbi rbr rbs rbt rbu ria rib rii rir ris rit riy rra rrb rri rrr rrs rrt rru rsa rsb rsi rsr rss rst rsu rta rtb rti rtr rts rtt rtu rty rua rub rui rur rus rut ruu ruy ry- rya ryr rys ryu ryy saa sab sai sar sas sat sau say sba sbb sbi sbr sbs sbt sbu sby sia sib sii sir sis sit siu sr- sra srb sri srr srs srt sry ss- ssa ssb ssi ssr sss sst ssu sta stb sti str sts stt stu sty sua sub sui sur sus sut suu suy sy- sya syb syi syr sys syt syu taa tab tai tar tas tat tau tay tba tbb tbi tbr tbs tbt tbu tia tib tii tir tis tit tiu tiy tra trb tri trr trs trt tru try tsa tsb tsi tsr tss tst tsu tsy tta ttb tti ttr tts ttt ttu tty tua tub tui tur tus tut tuu tuy tya tyr tys tyt ua- uaa uab uai uar uas uat uau uay uba ubb ubi ubr ubs ubt ubu uby uia uib uii uir uis uit uiu ur- ura urb uri urr urs urt uru ury usa usb usi usr uss ust usu uta utb uti utr uts utt utu uty uua uur uus uut uuu uyi uys uyu yaa yab yai yar yas yat yau yay ybi ybr ybs yby yii yir yis yit yra yrs yrt yru ysa ysb ysi ysr yss yst ysu ysy yta ytr yts ytt ytu yua yui yur yus yut yuu yuy yyb yys yyt yyu yyy