slt sly soa sod soe sof sol soo sop sor sos sot soy spa spd spe spf spl spo spp spr sps spt spy sr- sra srd sre srf srl sro srp srr srs srt sry ss- ssa ssd sse ssf ssl sso ssp ssr sss sst sta std ste stf stl sto stp str sts stt sty sy- sya syd sye syl syp syr sys syt taa tad tae taf tal tao tap tar tas tat tay tda tdd tde tdf tdl tdo tdp tdr tds tdt tdy te- tea ted tee tef tel teo tep ter tes tet tey tfa tfd tfe tff tfl tfo tfp tfr tfs tft tla tld tle tlf tll tlo tlp tlr tls tlt to- toa tod toe tof tol too top tor tos tot toy tpa tpd tpe tpf tpl tpo tpp tpr tps tpt tra trd tre trf trl tro trp trr trs trt try tsa tsd tse tsf tsl tso tsp tsr tss tst tsy tta ttd tte ttf ttl tto ttp ttr tts ttt tty tya tyd tye tyf tyl tyo typ tyr tys tyt yaa yad yae yaf yal yao yap yar yas yat yay yda yde ydl ydo yds ydt ydy yea yed yee yef yel yeo yep yer yes yet yey yfa yfd yfe yff yfr yfs yft yld yle yll ylr yls ylt yly yod yoe yof yol yoo yop yor yos yot yoy ypa ypd ypf ypl ypo yps yra yre yrf yro yrp yrs yrt ysa yse ysl yso ysp ysr yss yst ysy yta ytd yte ytf ytl yto ytp ytr yts ytt yye yyf yys yyt yyy