spr sps spt spy sr- src sre srg sri srn sro srp srr srs srt sry ss- ssc sse ssg ssi ssn sso ssp ssr sss sst stc ste stg sti stn sto stp str sts stt sty sy- syc sye syg syi syn syp syr sys syt tcc tce tcg tci tcn tco tcp tcr tcs tct te- tec tee teg tei ten teo tep ter tes tet tey tgc tge tgg tgi tgn tgo tgp tgr tgs tgt tgy tic tie tig tii tin tio tip tir tis tit tiy tnc tne tng tni tnn tno tnp tnr tns tnt to- toc toe tog toi ton too top tor tos tot toy tpc tpe tpg tpi tpn tpo tpp tpr tps tpt trc tre trg tri trn tro trp trr trs trt try tsc tse tsg tsi tsn tso tsp tsr tss tst tsy ttc tte ttg tti ttn tto ttp ttr tts ttt tty tyc tye tyg tyn tyo typ tyr tys tyt ycc yce yci yco ycp ycs ycy yec yee yeg yei yen yeo yep yer yes yet yey ygc ygo yie yig yii yin yio yip yir yis yit yne yng ynn ynp yns yny yoc yoe yog yoi yon yoo yop yor yos yot yoy ypg ypo yps yrc yre yrg yrn yro yrp yrs yrt ysc yse ysg ysi yso ysp ysr yss yst ysy ytc yte ytn yto ytp ytr yts ytt yyc yye yyg yys yyt yyy