snc snd sne sni snl snn sno snp sns snt sny soc sod soe soi sol son soo sop sos sot soy spc spd spe spi spl spn spo spp sps spt spy ss- ssc ssd sse ssi ssl ssn sso ssp sss sst stc std ste sti stl stn sto stp sts stt sty sy- syc syd sye syi syl syn syp sys syt tcc tcd tce tci tcl tcn tco tcp tcs tct tdc tdd tde tdi tdl tdn tdo tdp tds tdt tdy te- tec ted tee tei tel ten teo tep tes tet tey tic tid tie tii til tin tio tip tis tit tiy tlc tld tle tli tll tln tlo tlp tls tlt tnc tnd tne tni tnl tnn tno tnp tns tnt to- toc tod toe toi tol ton too top tos tot toy tpc tpd tpe tpi tpl tpn tpo tpp tps tpt tsc tsd tse tsi tsl tsn tso tsp tss tst tsy ttc ttd tte tti ttl ttn tto ttp tts ttt tty tyc tyd tye tyl tyn tyo typ tys tyt ycc ycd yce yci ycl yco ycp ycs ycy yde ydl ydn ydo yds ydt ydy yec yed yee yei yel yen yeo yep yes yet yey yid yie yii yin yio yip yis yit ylc yld yle yli yll yls ylt yly ynd yne ynn ynp yns yny yoc yod yoe yoi yol yon yoo yop yos yot yoy ypd ypl ypo yps ysc yse ysi ysl yso ysp yss yst ysy ytc ytd yte ytl ytn yto ytp yts ytt yyc yye yys yyt yyy