spe sph spi spo spp spr sps spt spy sr- src srd sre srh sri sro srp srr srs srt sry ss- ssc ssd sse ssh ssi sso ssp ssr sss sst stc std ste sth sti sto stp str sts stt sty sy- syc syd sye syh syi syp syr sys syt tcc tcd tce tch tci tco tcp tcr tcs tct tdc tdd tde tdh tdi tdo tdp tdr tds tdt tdy te- tec ted tee teh tei teo tep ter tes tet tey th- thc thd the thh thi tho thp thr ths tht thy tic tid tie tih tii tio tip tir tis tit tiy to- toc tod toe toh toi too top tor tos tot toy tpc tpd tpe tph tpi tpo tpp tpr tps tpt trc trd tre trh tri tro trp trr trs trt try tsc tsd tse tsh tsi tso tsp tsr tss tst tsy ttc ttd tte tth tti tto ttp ttr tts ttt tty tyc tyd tye tyo typ tyr tys tyt ycc ycd yce ych yci yco ycp ycs ycy yde ydo yds ydt ydy yec yed yee yeh yei yeo yep yer yes yet yey yhc yhe yhi yhs yht yid yie yih yii yio yip yir yis yit yoc yod yoe yoi yoo yop yor yos yot yoy ypd ypo yps yrc yre yro yrp yrs yrt ysc yse ysi yso ysp ysr yss yst ysy ytc ytd yte yth yto ytp ytr yts ytt yyc yye yys yyt yyy