sof sog soi som son soo sor sos sot sr- sra srb src sre srf srg sri srm srn sro srr srs srt ss- ssa ssb ssc sse ssf ssg ssi ssm ssn sso ssr sss sst sta stb stc ste stf stg sti stm stn sto str sts stt taa tab tac tae taf tag tai tam tan tao tar tas tat tba tbb tbc tbe tbf tbg tbi tbm tbn tbo tbr tbs tbt tca tcb tcc tce tcf tcg tci tcm tcn tco tcr tcs tct te- tea teb tec tee tef teg tei tem ten teo ter tes tet tfa tfb tfc tfe tff tfg tfi tfm tfn tfo tfr tfs tft tga tgb tgc tge tgf tgg tgi tgm tgn tgo tgr tgs tgt tia tib tic tie tif tig tii tim tin tio tir tis tit tma tmb tmc tme tmf tmg tmi tmm tmn tmo tmr tms tmt tna tnb tnc tne tnf tng tni tnm tnn tno tnr tns tnt to- toa tob toc toe tof tog toi tom ton too tor tos tot tra trb trc tre trf trg tri trm trn tro trr trs trt tsa tsb tsc tse tsf tsg tsi tsm tsn tso tsr tss tst tta ttb ttc tte ttf ttg tti ttm ttn tto ttr tts ttt