ssb ssd ssg ssi ssm ssn sso ssr sss sst stb std stg sti stm stn sto str sts stt sty sy- syb syd syg syi sym syn syr sys syt tbb tbd tbg tbi tbm tbn tbo tbr tbs tbt tdb tdd tdg tdi tdm tdn tdo tdr tds tdt tdy tgb tgg tgi tgm tgn tgo tgr tgs tgt tgy tib tid tig tii tim tin tio tir tis tit tiy tmb tmd tmg tmi tmm tmn tmo tmr tms tmt tmy tnb tnd tng tni tnm tnn tno tnr tns tnt to- tob tod tog toi tom ton too tor tos tot toy trb trd trg tri trm trn tro trr trs trt try tsb tsd tsg tsi tsm tsn tso tsr tss tst tsy ttb ttd ttg tti ttm ttn tto ttr tts ttt tty tyd tyg tym tyn tyo tyr tys tyt ybg ybi ybm ybr ybs yby ydg ydn ydo yds ydt ydy ygm ygo yid yig yii yim yin yio yir yis yit ymg ymi ymm ymo yms ymt ynd yng ynn yns yny yob yod yog yoi yom yon yoo yor yos yot yoy yrg yrn yro yrs yrt ysb ysg ysi ysm yso ysr yss yst ysy ytd ytm ytn yto ytr yts ytt yyb yyg yys yyt yyy