a-a a-c aaa aac aam aan aar ac- aca acc acm acn acr ama amc amm amn amr an- ana anc anm ann anr ar- ara arc arm arn arr c-- caa cac cam can car cca ccc ccm ccn ccr cma cmc cmm cmn cmr cn- cna cnc cnm cnn cnr cra crc crm crn crr m-r maa mac mam man mar mc- mca mcc mcm mcn mcr mma mmc mmm mmn mmr mna mnc mnm mnn mnr mra mrc mrm mrn mrr naa nac nam nan nar nca ncc ncm ncn ncr nma nmc nmm nmn nmr nna nnc nnm nnn nra nrc nrm nrn nrr ra- raa rac ram ran rar rca rcc rcm rcn rcr rma rmc rmm rmn rmr rna rnc rnm rnn rnr rra rrc rrm rrn rrr