sfs sft sia sic sid sie sif sii sio sir sis sit soa soc sod soe sof soi soo sor sos sot soy sr- sra src srd sre srf sri sro srr srs srt sry ss- ssa ssc ssd sse ssf ssi sso ssr sss sst sta stc std ste stf sti sto str sts stt sty sy- sya syc syd sye syi syr sys syt taa tac tad tae taf tai tao tar tas tat tay tca tcc tcd tce tcf tci tco tcr tcs tct tda tdc tdd tde tdf tdi tdo tdr tds tdt tdy te- tea tec ted tee tef tei teo ter tes tet tey tfa tfc tfd tfe tff tfi tfo tfr tfs tft tia tic tid tie tif tii tio tir tis tit tiy to- toa toc tod toe tof toi too tor tos tot toy tra trc trd tre trf tri tro trr trs trt try tsa tsc tsd tse tsf tsi tso tsr tss tst tsy tta ttc ttd tte ttf tti tto ttr tts ttt tty tya tyc tyd tye tyf tyo tyr tys tyt yaa yac yad yae yaf yai yao yar yas yat yay yca ycc ycd yce ycf yci yco ycs ycy yda yde ydo yds ydt ydy yea yec yed yee yef yei yeo yer yes yet yey yfa yfc yfd yfe yff yfr yfs yft yid yie yif yii yio yir yis yit yoc yod yoe yof yoi yoo yor yos yot yoy yra yrc yre yrf yro yrs yrt ysa ysc yse ysi yso ysr yss yst ysy yta ytc ytd yte ytf yto ytr yts ytt yyc yye yyf yys yyt yyy