srd sre srf srg sri srl srm srn sro srr srs srt ss- ssa ssd sse ssf ssg ssi ssl ssm ssn sso ssr sss sst sta std ste stf stg sti stl stm stn sto str sts stt taa tad tae taf tag tai tal tam tan tao tar tas tat tda tdd tde tdf tdg tdi tdl tdm tdn tdo tdr tds tdt te- tea ted tee tef teg tei tel tem ten teo ter tes tet tfa tfd tfe tff tfg tfi tfl tfm tfn tfo tfr tfs tft tga tge tgf tgg tgi tgl tgm tgn tgo tgr tgs tgt tia tid tie tif tig tii til tim tin tio tir tis tit tla tld tle tlf tlg tli tll tlm tln tlo tlr tls tlt tma tmd tme tmf tmg tmi tml tmm tmn tmo tmr tms tmt tna tnd tne tnf tng tni tnl tnm tnn tno tnr tns tnt to- toa tod toe tof tog toi tol tom ton too tor tos tot tra trd tre trf trg tri trl trm trn tro trr trs trt tsa tsd tse tsf tsg tsi tsl tsm tsn tso tsr tss tst tta ttd tte ttf ttg tti ttl ttm ttn tto ttr tts ttt