sop sor sos sot soy spa spc spg spi spl spo spp spr sps spt spy sr- sra src srg sri srl sro srp srr srs srt sry ss- ssa ssc ssg ssi ssl sso ssp ssr sss sst sta stc stg sti stl sto stp str sts stt sty sy- sya syc syg syi syl syp syr sys syt taa tac tag tai tal tao tap tar tas tat tay tca tcc tcg tci tcl tco tcp tcr tcs tct tga tgc tgg tgi tgl tgo tgp tgr tgs tgt tgy tia tic tig tii til tio tip tir tis tit tiy tla tlc tlg tli tll tlo tlp tlr tls tlt to- toa toc tog toi tol too top tor tos tot toy tpa tpc tpg tpi tpl tpo tpp tpr tps tpt tra trc trg tri trl tro trp trr trs trt try tsa tsc tsg tsi tsl tso tsp tsr tss tst tsy tta ttc ttg tti ttl tto ttp ttr tts ttt tty tya tyc tyg tyl tyo typ tyr tys tyt yaa yac yag yai yal yao yap yar yas yat yay yca ycc yci ycl yco ycp ycs ycy yga ygc ygl ygo yig yii yio yip yir yis yit ylc ylg yli yll ylr yls ylt yly yoc yog yoi yol yoo yop yor yos yot yoy ypa ypg ypl ypo yps yra yrc yrg yro yrp yrs yrt ysa ysc ysg ysi ysl yso ysp ysr yss yst ysy yta ytc ytl yto ytp ytr yts ytt yyc yyg yys yyt yyy