smn smo smr sms smt snd sne snf snj snk snm snn sno snr sns snt sod soe sof soj sok som son soo sor sos sot sr- srd sre srf srj srk srm srn sro srr srs srt ss- ssd sse ssf ssj ssk ssm ssn sso ssr sss sst std ste stf stj stk stm stn sto str sts stt tdd tde tdf tdk tdm tdn tdo tdr tds tdt te- ted tee tef tej tek tem ten teo ter tes tet tfd tfe tff tfj tfk tfm tfn tfo tfr tfs tft tjd tje tjf tjm tjo tjr tjs tke tkk tkm tko tkr tks tkt tmd tme tmf tmj tmk tmm tmn tmo tmr tms tmt tnd tne tnf tnk tnm tnn tno tnr tns tnt to- tod toe tof toj tok tom ton too tor tos tot trd tre trf trk trm trn tro trr trs trt tsd tse tsf tsj tsk tsm tsn tso tsr tss tst ttd tte ttf ttk ttm ttn tto ttr tts ttt