slc sld sle slk sll slr sls slt sly sr- sra srb src srd sre srk srl srr srs srt sry ss- ssa ssb ssc ssd sse ssk ssl ssr sss sst sta stb stc std ste stk stl str sts stt sty sy- sya syb syc syd sye syk syl syr sys syt taa tab tac tad tae tak tal tar tas tat tay tba tbb tbc tbd tbe tbk tbl tbr tbs tbt tca tcb tcc tcd tce tck tcl tcr tcs tct tda tdb tdc tdd tde tdk tdl tdr tds tdt tdy te- tea teb tec ted tee tek tel ter tes tet tey tka tkb tkc tke tkk tkl tkr tks tkt tky tla tlc tld tle tlk tll tlr tls tlt tra trb trc trd tre trk trl trr trs trt try tsa tsb tsc tsd tse tsk tsl tsr tss tst tsy tta ttb ttc ttd tte ttk ttl ttr tts ttt tty tya tyc tyd tye tyl tyr tys tyt yaa yab yac yad yae yak yal yar yas yat yay ybc ybe ybl ybr ybs yby yca ycc ycd yce ycl ycs ycy yda yde ydl yds ydt ydy yea yeb yec yed yee yek yel yer yes yet yey yka ykk ylc yld yle ylk yll ylr yls ylt yly yra yrc yre yrs yrt ysa ysb ysc yse ysk ysl ysr yss yst ysy yta ytc ytd yte ytk ytl ytr yts ytt yyb yyc yye yys yyt yyy