sra srb srd sre sri srk sro srr srs srt sry ss- ssa ssb ssd sse ssi ssk sso ssr sss sst sta stb std ste sti stk sto str sts stt sty sy- sya syb syd sye syi syk syr sys syt taa tab tad tae tai tak tao tar tas tat tay tba tbb tbd tbe tbi tbk tbo tbr tbs tbt tda tdb tdd tde tdi tdk tdo tdr tds tdt tdy te- tea teb ted tee tei tek teo ter tes tet tey tia tib tid tie tii tik tio tir tis tit tiy tka tkb tke tkk tko tkr tks tkt tky to- toa tob tod toe toi tok too tor tos tot toy tra trb trd tre tri trk tro trr trs trt try tsa tsb tsd tse tsi tsk tso tsr tss tst tsy tta ttb ttd tte tti ttk tto ttr tts ttt tty tya tyd tye tyo tyr tys tyt yaa yab yad yae yai yak yao yar yas yat yay ybe ybi ybr ybs yby yda yde ydo yds ydt ydy yea yeb yed yee yei yek yeo yer yes yet yey yid yie yii yio yir yis yit yka yki ykk yob yod yoe yoi yok yoo yor yos yot yoy yra yre yro yrs yrt ysa ysb yse ysi ysk yso ysr yss yst ysy yta ytd yte ytk yto ytr yts ytt yyb yye yys yyt yyy