a-a a-c aaa aac aam aan aar aas ac- aca acc acm acn acr acs ama amc amm amn amr ams an- ana anc anm ann anr ans ar- ara arc arm arn arr ars as- asa asc asm asn asr ass c-- caa cac cam can car cas cca ccc ccm ccn ccr ccs cma cmc cmm cmn cmr cms cn- cna cnc cnm cnn cnr cns cra crc crm crn crr crs csa csc csm csn csr css m-r maa mac mam man mar mas mc- mca mcc mcm mcn mcr mcs mma mmc mmm mmn mmr mms mna mnc mnm mnn mnr mns mra mrc mrm mrn mrr mrs msa msc msm msn msr mss naa nac nam nan nar nas nca ncc ncm ncn ncr ncs nma nmc nmm nmn nmr nms nna nnc nnm nnn nns nra nrc nrm nrn nrr nrs nsa nsc nsm nsn nsr nss ra- raa rac ram ran rar ras rca rcc rcm rcn rcr rcs rma rmc rmm rmn rmr rms rna rnc rnm rnn rnr rns rra rrc rrm rrn rrr rrs rsa rsc rsm rsn rsr rss saa sac sam san sar sas sca scc scm scn scr scs sma smc smm smn smr sms sna snc snm snn snr sns sr- sra src srm srn srr srs ss- ssa ssc ssm ssn ssr sss