sor sos sot sr- sra srb src srd sre srg srh sri srn sro srr srs srt ss- ssa ssb ssc ssd sse ssg ssh ssi ssn sso ssr sss sst sta stb stc std ste stg sth sti stn sto str sts stt taa tab tac tad tae tag tah tai tan tao tar tas tat tba tbb tbc tbd tbe tbg tbh tbi tbn tbo tbr tbs tbt tca tcb tcc tcd tce tcg tch tci tcn tco tcr tcs tct tda tdb tdc tdd tde tdg tdh tdi tdn tdo tdr tds tdt te- tea teb tec ted tee teg teh tei ten teo ter tes tet tga tgb tgc tge tgg tgh tgi tgn tgo tgr tgs tgt th- tha thb thc thd the thg thh thi thn tho thr ths tht tia tib tic tid tie tig tih tii tin tio tir tis tit tna tnb tnc tnd tne tng tnh tni tnn tno tnr tns tnt to- toa tob toc tod toe tog toh toi ton too tor tos tot tra trb trc trd tre trg trh tri trn tro trr trs trt tsa tsb tsc tsd tse tsg tsh tsi tsn tso tsr tss tst tta ttb ttc ttd tte ttg tth tti ttn tto ttr tts ttt