a-a a-c aaa aac aak aam aan aar aas ac- aca acc ack acm acn acr acs aka akc akk akm akn akr aks ama amc amk amm amn amr ams an- ana anc ank anm ann anr ans ar- ara arc ark arm arn arr ars as- asa asc ask asm asn asr ass c-- caa cac cak cam can car cas cca ccc cck ccm ccn ccr ccs cka ckc ckm cks cma cmc cmk cmm cmn cmr cms cn- cna cnc cnm cnn cnr cns cra crc crk crm crn crr crs csa csc csk csm csn csr css ka- kaa kac kak kam kan kar kas kca kcc kck kcm kcn kcr kcs kkc kkk kkm kkn kkr kks kma kmc kmk kmm kms kn- kna knc knk knm knn knr kra krc krk krn krr krs ksa ksc ksk ksm ksn ksr kss m-r maa mac mak mam man mar mas mc- mca mcc mck mcm mcn mcr mcs mka mkc mkk mkm mkn mkr mks mma mmc mmk mmm mmn mmr mms mna mnc mnk mnm mnn mnr mns mra mrc mrk mrm mrn mrr mrs msa msc msk msm msn msr mss naa nac nak nam nan nar nas nca ncc nck ncm ncn ncr ncs nka nkc nkk nkm nkn nkr nks nma nmc nmk nmm nmn nmr nms nna nnc nnk nnm nnn nns nra nrc nrk nrm nrn nrr nrs nsa nsc nsk nsm nsn nsr nss ra- raa rac rak ram ran rar ras rca rcc rcm rcn rcr rcs rkc rkk rkm rks rma rmc rmm rmn rmr rms rna rnc rnm rnn rnr rns rra rrc rrk rrm rrn rrr rrs rsa rsc rsk rsm rsn rsr rss saa sac sak sam san sar sas sca scc sck scm scn scr scs sk- ska skc skk skm skr sks sma smc smk smm smn smr sms sna snc snk snm snn snr sns sr- sra src srk srm srn srr srs ss- ssa ssc ssk ssm ssn ssr sss