snb snc snd sne sni snl snn snr sns snt sny sr- srb src srd sre sri srl srn srr srs srt sry ss- ssb ssc ssd sse ssi ssl ssn ssr sss sst stb stc std ste sti stl stn str sts stt sty sy- syb syc syd sye syi syl syn syr sys syt tbb tbc tbd tbe tbi tbl tbn tbr tbs tbt tcb tcc tcd tce tci tcl tcn tcr tcs tct tdb tdc tdd tde tdi tdl tdn tdr tds tdt tdy te- teb tec ted tee tei tel ten ter tes tet tey tib tic tid tie tii til tin tir tis tit tiy tlc tld tle tli tll tln tlr tls tlt tnb tnc tnd tne tni tnl tnn tnr tns tnt trb trc trd tre tri trl trn trr trs trt try tsb tsc tsd tse tsi tsl tsn tsr tss tst tsy ttb ttc ttd tte tti ttl ttn ttr tts ttt tty tyc tyd tye tyl tyn tyr tys tyt ybc ybe ybi ybl ybr ybs yby ycc ycd yce yci ycl ycs ycy yde ydl ydn yds ydt ydy yeb yec yed yee yei yel yen yer yes yet yey yid yie yii yin yir yis yit ylc yld yle yli yll ylr yls ylt yly ynd yne ynn yns yny yrc yre yrn yrs yrt ysb ysc yse ysi ysl ysr yss yst ysy ytc ytd yte ytl ytn ytr yts ytt yyb yyc yye yys yyt yyy