soo sop sor sos sot soy spc spd spe spi spl spo spp spr sps spt spy sr- src srd sre sri srl sro srp srr srs srt sry ss- ssc ssd sse ssi ssl sso ssp ssr sss sst stc std ste sti stl sto stp str sts stt sty sy- syc syd sye syi syl syp syr sys syt tcc tcd tce tci tcl tco tcp tcr tcs tct tdc tdd tde tdi tdl tdo tdp tdr tds tdt tdy te- tec ted tee tei tel teo tep ter tes tet tey tic tid tie tii til tio tip tir tis tit tiy tlc tld tle tli tll tlo tlp tlr tls tlt to- toc tod toe toi tol too top tor tos tot toy tpc tpd tpe tpi tpl tpo tpp tpr tps tpt trc trd tre tri trl tro trp trr trs trt try tsc tsd tse tsi tsl tso tsp tsr tss tst tsy ttc ttd tte tti ttl tto ttp ttr tts ttt tty tyc tyd tye tyl tyo typ tyr tys tyt ycc ycd yce yci ycl yco ycp ycs ycy yde ydl ydo yds ydt ydy yec yed yee yei yel yeo yep yer yes yet yey yid yie yii yio yip yir yis yit ylc yld yle yli yll ylr yls ylt yly yoc yod yoe yoi yol yoo yop yor yos yot yoy ypd ypl ypo yps yrc yre yro yrp yrs yrt ysc yse ysi ysl yso ysp ysr yss yst ysy ytc ytd yte ytl yto ytp ytr yts ytt yyc yye yys yyt yyy