sst std stf stg sti stm stn sto stp sts stt sty sy- syd syg syi sym syn syp sys syt tdd tdf tdg tdi tdm tdn tdo tdp tds tdt tdy tfd tff tfg tfi tfm tfn tfo tfp tfs tft tgf tgg tgi tgm tgn tgo tgp tgs tgt tgy tid tif tig tii tim tin tio tip tis tit tiy tmd tmf tmg tmi tmm tmn tmo tmp tms tmt tmy tnd tnf tng tni tnm tnn tno tnp tns tnt to- tod tof tog toi tom ton too top tos tot toy tpd tpf tpg tpi tpm tpn tpo tpp tps tpt tsd tsf tsg tsi tsm tsn tso tsp tss tst tsy ttd ttf ttg tti ttm ttn tto ttp tts ttt tty tyd tyf tyg tym tyn tyo typ tys tyt ydg ydn ydo yds ydt ydy yfd yff yfm yfs yft ygm ygo yid yif yig yii yim yin yio yip yis yit ymg ymi ymm ymo yms ymt ynd yng ynn ynp yns yny yod yof yog yoi yom yon yoo yop yos yot yoy ypd ypf ypg ypo yps ysg ysi ysm yso ysp yss yst ysy ytd ytf ytm ytn yto ytp yts ytt yyf yyg yys yyt yyy