set sfa sfd sfe sff sfj sfk sfn sfo sfr sfs sft sja sjd sje sjf sjj sjk sjr sjs sjt sk- ska skd ske skf skj skk sko skr sks skt sna snd sne snf snj snk snn sno snr sns snt soa sod soe sof soj sok son soo sor sos sot sr- sra srd sre srf srj srk srn sro srr srs srt ss- ssa ssd sse ssf ssj ssk ssn sso ssr sss sst sta std ste stf stj stk stn sto str sts stt taa tad tae taf taj tak tan tao tar tas tat tda tdd tde tdf tdk tdn tdo tdr tds tdt te- tea ted tee tef tej tek ten teo ter tes tet tfa tfd tfe tff tfj tfk tfn tfo tfr tfs tft tjd tje tjf tjo tjr tjs tka tke tkk tko tkr tks tkt tna tnd tne tnf tnk tnn tno tnr tns tnt to- toa tod toe tof toj tok ton too tor tos tot tra trd tre trf trk trn tro trr trs trt tsa tsd tse tsf tsj tsk tsn tso tsr tss tst tta ttd tte ttf ttk ttn tto ttr tts ttt