a-a a-c aaa aac aaf aam aan aar ac- aca acc acf acm acn acr af- afa afc aff afm afn afr ama amc amf amm amn amr an- ana anc anf anm ann anr ar- ara arc arf arm arn arr c-- caa cac caf cam can car cca ccc ccf ccm ccn ccr cfa cfc cff cfm cfn cfr cma cmc cmf cmm cmn cmr cn- cna cnc cnf cnm cnn cnr cra crc crf crm crn crr faa fac faf fam fan far fca fcc fcf fcm fcn fcr ffa ffc fff ffm ffn ffr fma fmc fmf fmm fmn fmr fna fnc fnf fnm fnn fnr fra frc frf frm frn frr m-f m-r maa mac maf mam man mar mc- mca mcc mcf mcm mcn mcr mfa mfc mff mfm mfn mfr mma mmc mmf mmm mmn mmr mna mnc mnf mnm mnn mnr mra mrc mrf mrm mrn mrr naa nac naf nam nan nar nca ncc ncf ncm ncn ncr nfa nfc nff nfn nfr nma nmc nmm nmn nmr nna nnc nnf nnm nnn nra nrc nrf nrm nrn nrr ra- raa rac raf ram ran rar rca rcc rcf rcm rcn rcr rfa rfc rff rfm rfn rfr rma rmc rmf rmm rmn rmr rna rnc rnm rnn rnr rra rrc rrf rrm rrn rrr