a-a a-c aaa aac aaf aak aam aar aas ac- aca acc acf ack acm acr acs af- afa afc aff afk afm afr afs aka akc akk akm akr aks ama amc amf amk amm amr ams ar- ara arc arf ark arm arr ars as- asa asc asf ask asm asr ass c-- caa cac caf cak cam car cas cca ccc ccf cck ccm ccr ccs cfa cfc cff cfk cfm cfr cfs cka ckc ckm cks cma cmc cmf cmk cmm cmr cms cra crc crf crk crm crr crs csa csc csf csk csm csr css faa fac faf fak fam far fas fca fcc fcf fck fcm fcr fcs ffa ffc fff ffk ffm ffr ffs fka fkc fkf fkk fkm fma fmc fmf fmm fmr fms fra frc frf frk frm frr frs fsa fsc fsf fsk fsm fsr fss ka- kaa kac kaf kak kam kar kas kca kcc kck kcm kcr kcs kfa kfc kff kfm kfs kkc kkk kkm kkr kks kma kmc kmf kmk kmm kms kra krc krf krk krr krs ksa ksc ksf ksk ksm ksr kss m-f m-r maa mac maf mak mam mar mas mc- mca mcc mcf mck mcm mcr mcs mfa mfc mff mfm mfr mfs mka mkc mkk mkm mkr mks mma mmc mmf mmk mmm mmr mms mra mrc mrf mrk mrm mrr mrs msa msc msf msk msm msr mss ra- raa rac raf rak ram rar ras rca rcc rcf rcm rcr rcs rfa rfc rff rfk rfm rfr rfs rkc rkf rkk rkm rks rma rmc rmf rmm rmr rms rra rrc rrf rrk rrm rrr rrs rsa rsc rsf rsk rsm rsr rss saa sac saf sak sam sar sas sca scc scf sck scm scr scs sfa sfc sff sfk sfm sfr sfs sk- ska skc skf skk skm skr sks sma smc smf smk smm smr sms sr- sra src srf srk srm srr srs ss- ssa ssc ssf ssk ssm ssr sss