spi spm spo spp spr sps spt spy sr- src sre srh sri srm sro srp srr srs srt sry ss- ssc sse ssh ssi ssm sso ssp ssr sss sst stc ste sth sti stm sto stp str sts stt sty sy- syc sye syh syi sym syp syr sys syt tcc tce tch tci tcm tco tcp tcr tcs tct te- tec tee teh tei tem teo tep ter tes tet tey th- thc the thh thi thm tho thp thr ths tht thy tic tie tih tii tim tio tip tir tis tit tiy tmc tme tmh tmi tmm tmo tmp tmr tms tmt tmy to- toc toe toh toi tom too top tor tos tot toy tpc tpe tph tpi tpm tpo tpp tpr tps tpt trc tre trh tri trm tro trp trr trs trt try tsc tse tsh tsi tsm tso tsp tsr tss tst tsy ttc tte tth tti ttm tto ttp ttr tts ttt tty tyc tye tym tyo typ tyr tys tyt ycc yce ych yci yco ycp ycs ycy yec yee yeh yei yem yeo yep yer yes yet yey yhc yhe yhi yhs yht yie yih yii yim yio yip yir yis yit ymc yme ymi ymm ymo yms ymt yoc yoe yoi yom yoo yop yor yos yot yoy ypo yps yrc yre yro yrp yrs yrt ysc yse ysi ysm yso ysp ysr yss yst ysy ytc yte yth ytm yto ytp ytr yts ytt yyc yye yys yyt yyy