sla slb slc sle sll slo slp slr sls slt sly soa sob soc soe sol soo sop sor sos sot soy spa spb spc spe spl spo spp spr sps spt spy sr- sra srb src sre srl sro srp srr srs srt sry ss- ssa ssb ssc sse ssl sso ssp ssr sss sst sta stb stc ste stl sto stp str sts stt sty sy- sya syb syc sye syl syp syr sys syt taa tab tac tae tal tao tap tar tas tat tay tba tbb tbc tbe tbl tbo tbp tbr tbs tbt tca tcb tcc tce tcl tco tcp tcr tcs tct te- tea teb tec tee tel teo tep ter tes tet tey tla tlc tle tll tlo tlp tlr tls tlt to- toa tob toc toe tol too top tor tos tot toy tpa tpb tpc tpe tpl tpo tpp tpr tps tpt tra trb trc tre trl tro trp trr trs trt try tsa tsb tsc tse tsl tso tsp tsr tss tst tsy tta ttb ttc tte ttl tto ttp ttr tts ttt tty tya tyc tye tyl tyo typ tyr tys tyt yaa yab yac yae yal yao yap yar yas yat yay ybc ybe ybl ybp ybr ybs yby yca ycc yce ycl yco ycp ycs ycy yea yeb yec yee yel yeo yep yer yes yet yey ylc yle yll ylr yls ylt yly yob yoc yoe yol yoo yop yor yos yot yoy ypa ypl ypo yps yra yrc yre yro yrp yrs yrt ysa ysb ysc yse ysl yso ysp ysr yss yst ysy yta ytc yte ytl yto ytp ytr yts ytt yyb yyc yye yys yyt yyy