snc sne snf sni snn sno snr sns snt sny soa soc soe sof soi son soo sor sos sot soy sr- sra src sre srf sri srn sro srr srs srt sry ss- ssa ssc sse ssf ssi ssn sso ssr sss sst sta stc ste stf sti stn sto str sts stt sty sy- sya syc sye syi syn syr sys syt taa tac tae taf tai tan tao tar tas tat tay tca tcc tce tcf tci tcn tco tcr tcs tct te- tea tec tee tef tei ten teo ter tes tet tey tfa tfc tfe tff tfi tfn tfo tfr tfs tft tia tic tie tif tii tin tio tir tis tit tiy tna tnc tne tnf tni tnn tno tnr tns tnt to- toa toc toe tof toi ton too tor tos tot toy tra trc tre trf tri trn tro trr trs trt try tsa tsc tse tsf tsi tsn tso tsr tss tst tsy tta ttc tte ttf tti ttn tto ttr tts ttt tty tya tyc tye tyf tyn tyo tyr tys tyt yaa yac yae yaf yai yan yao yar yas yat yay yca ycc yce ycf yci yco ycs ycy yea yec yee yef yei yen yeo yer yes yet yey yfa yfc yfe yff yfr yfs yft yie yif yii yin yio yir yis yit yna yne ynn yns yny yoc yoe yof yoi yon yoo yor yos yot yoy yra yrc yre yrf yrn yro yrs yrt ysa ysc yse ysi yso ysr yss yst ysy yta ytc yte ytf ytn yto ytr yts ytt yyc yye yyf yys yyt yyy