smc smd sme smi smm smn smo sms smt smy snb snc snd sne sni snm snn sno sns snt sny sob soc sod soe soi som son soo sos sot soy ss- ssb ssc ssd sse ssi ssm ssn sso sss sst stb stc std ste sti stm stn sto sts stt sty sy- syb syc syd sye syi sym syn sys syt tbb tbc tbd tbe tbi tbm tbn tbo tbs tbt tcb tcc tcd tce tci tcm tcn tco tcs tct tdb tdc tdd tde tdi tdm tdn tdo tds tdt tdy te- teb tec ted tee tei tem ten teo tes tet tey tib tic tid tie tii tim tin tio tis tit tiy tmb tmc tmd tme tmi tmm tmn tmo tms tmt tmy tnb tnc tnd tne tni tnm tnn tno tns tnt to- tob toc tod toe toi tom ton too tos tot toy tsb tsc tsd tse tsi tsm tsn tso tss tst tsy ttb ttc ttd tte tti ttm ttn tto tts ttt tty tyc tyd tye tym tyn tyo tys tyt ybc ybe ybi ybm ybs yby ycc ycd yce yci yco ycs ycy yde ydn ydo yds ydt ydy yeb yec yed yee yei yem yen yeo yes yet yey yid yie yii yim yin yio yis yit ymc yme ymi ymm ymo yms ymt ynd yne ynn yns yny yob yoc yod yoe yoi yom yon yoo yos yot yoy ysb ysc yse ysi ysm yso yss yst ysy ytc ytd yte ytm ytn yto yts ytt yyb yyc yye yys yyt yyy