fff ffk ffm ffr ffs fft fkf fkk fkm fkt fmf fmm fmr fms fmt frf frk frm frr frs frt fsf fsk fsm fsr fss fst ftf ftk ftm ftr fts ftt k-t kff kfm kfs kkk kkm kkr kks kkt kmf kmk kmm kms kmt krf krk krr krs krt ksf ksk ksm ksr kss kst ktf ktk ktm ktr kts ktt m-f m-r mff mfm mfr mfs mft mkk mkm mkr mks mkt mmf mmk mmm mmr mms mmt mrf mrk mrm mrr mrs mrt msf msk msm msr mss mst mtf mtk mtm mtr mts mtt rff rfk rfm rfr rfs rft rkf rkk rkm rks rkt rmf rmm rmr rms rmt rrf rrk rrm rrr rrs rrt rsf rsk rsm rsr rss rst rtf rtk rtm rtr rts rtt sff sfk sfm sfr sfs sft sk- skf skk skm skr sks skt smf smk smm smr sms smt sr- srf srk srm srr srs srt ss- ssf ssk ssm ssr sss sst stf stk stm str sts stt tff tfk tfm tfr tfs tft tkk tkm tkr tks tkt tmf tmk tmm tmr tms tmt trf trk trm trr trs trt tsf tsk tsm tsr tss tst ttf ttk ttm ttr tts ttt