snr sns snt sny soa sob soc sod soh son soo sor sos sot soy sr- sra srb src srd srh srn sro srr srs srt sry ss- ssa ssb ssc ssd ssh ssn sso ssr sss sst sta stb stc std sth stn sto str sts stt sty sy- sya syb syc syd syh syn syr sys syt taa tab tac tad tah tan tao tar tas tat tay tba tbb tbc tbd tbh tbn tbo tbr tbs tbt tca tcb tcc tcd tch tcn tco tcr tcs tct tda tdb tdc tdd tdh tdn tdo tdr tds tdt tdy th- tha thb thc thd thh thn tho thr ths tht thy tna tnb tnc tnd tnh tnn tno tnr tns tnt to- toa tob toc tod toh ton too tor tos tot toy tra trb trc trd trh trn tro trr trs trt try tsa tsb tsc tsd tsh tsn tso tsr tss tst tsy tta ttb ttc ttd tth ttn tto ttr tts ttt tty tya tyc tyd tyn tyo tyr tys tyt yaa yab yac yad yah yan yao yar yas yat yay ybc ybr ybs yby yca ycc ycd ych yco ycs ycy yda ydn ydo yds ydt ydy yha yhc yhs yht yna ynd ynn yns yny yob yoc yod yon yoo yor yos yot yoy yra yrc yrn yro yrs yrt ysa ysb ysc yso ysr yss yst ysy yta ytc ytd yth ytn yto ytr yts ytt yyb yyc yys yyt yyy