spp spr sps spt spy sr- srb sre srh sri srm sro srp srr srs srt sry ss- ssb sse ssh ssi ssm sso ssp ssr sss sst stb ste sth sti stm sto stp str sts stt sty sy- syb sye syh syi sym syp syr sys syt tbb tbe tbh tbi tbm tbo tbp tbr tbs tbt te- teb tee teh tei tem teo tep ter tes tet tey th- thb the thh thi thm tho thp thr ths tht thy tib tie tih tii tim tio tip tir tis tit tiy tmb tme tmh tmi tmm tmo tmp tmr tms tmt tmy to- tob toe toh toi tom too top tor tos tot toy tpb tpe tph tpi tpm tpo tpp tpr tps tpt trb tre trh tri trm tro trp trr trs trt try tsb tse tsh tsi tsm tso tsp tsr tss tst tsy ttb tte tth tti ttm tto ttp ttr tts ttt tty tye tym tyo typ tyr tys tyt ybe ybi ybm ybp ybr ybs yby yeb yee yeh yei yem yeo yep yer yes yet yey yhe yhi yhs yht yie yih yii yim yio yip yir yis yit yme ymi ymm ymo yms ymt yob yoe yoi yom yoo yop yor yos yot yoy ypo yps yre yro yrp yrs yrt ysb yse ysi ysm yso ysp ysr yss yst ysy yte yth ytm yto ytp ytr yts ytt yyb yye yys yyt yyy