sia sib sid sie sii sin sio sir sis sit sna snb snd sne sni snn sno snr sns snt sny soa sob sod soe soi son soo sor sos sot soy sr- sra srb srd sre sri srn sro srr srs srt sry ss- ssa ssb ssd sse ssi ssn sso ssr sss sst sta stb std ste sti stn sto str sts stt sty sy- sya syb syd sye syi syn syr sys syt taa tab tad tae tai tan tao tar tas tat tay tba tbb tbd tbe tbi tbn tbo tbr tbs tbt tda tdb tdd tde tdi tdn tdo tdr tds tdt tdy te- tea teb ted tee tei ten teo ter tes tet tey tia tib tid tie tii tin tio tir tis tit tiy tna tnb tnd tne tni tnn tno tnr tns tnt to- toa tob tod toe toi ton too tor tos tot toy tra trb trd tre tri trn tro trr trs trt try tsa tsb tsd tse tsi tsn tso tsr tss tst tsy tta ttb ttd tte tti ttn tto ttr tts ttt tty tya tyd tye tyn tyo tyr tys tyt yaa yab yad yae yai yan yao yar yas yat yay ybe ybi ybr ybs yby yda yde ydn ydo yds ydt ydy yea yeb yed yee yei yen yeo yer yes yet yey yid yie yii yin yio yir yis yit yna ynd yne ynn yns yny yob yod yoe yoi yon yoo yor yos yot yoy yra yre yrn yro yrs yrt ysa ysb yse ysi yso ysr yss yst ysy yta ytd yte ytn yto ytr yts ytt yyb yye yys yyt yyy