a-a a-t aaa aaf aam aan aas aat af- afa aff afm afn afs aft ama amf amm amn ams amt an- ana anf anm ann ans ant as- asa asf asm asn ass ast at- ata atf atm atn ats att faa faf fam fan fas fat ffa fff ffm ffn ffs fft fma fmf fmm fmn fms fmt fna fnf fnm fnn fns fnt fsa fsf fsm fsn fss fst fta ftf ftm ftn fts ftt m-f maa maf mam man mas mat mfa mff mfm mfn mfs mft mma mmf mmm mmn mms mmt mna mnf mnm mnn mns mnt msa msf msm msn mss mst mta mtf mtm mtn mts mtt naa naf nam nan nas nat nfa nff nfn nfs nft nma nmm nmn nms nmt nna nnf nnm nnn nns nnt nsa nsf nsm nsn nss nst nta ntf ntm ntn nts ntt saa saf sam san sas sat sfa sff sfm sfn sfs sft sma smf smm smn sms smt sna snf snm snn sns snt ss- ssa ssf ssm ssn sss sst sta stf stm stn sts stt taa taf tam tan tas tat tfa tff tfm tfn tfs tft tma tmf tmm tmn tms tmt tna tnf tnm tnn tns tnt tsa tsf tsm tsn tss tst tta ttf ttm ttn tts ttt