a-a a-c aaa aac aam aap aar ac- aca acc acm acp acr ama amc amm amp amr ap- apa apc apm app apr ar- ara arc arm arp arr c-- caa cac cam cap car cca ccc ccm ccp ccr cma cmc cmm cmp cmr cpa cpc cpm cpp cpr cra crc crm crp crr m-r maa mac mam map mar mc- mca mcc mcm mcp mcr mma mmc mmm mmp mmr mpa mpc mpm mpp mpr mra mrc mrm mrp mrr p-p paa pac pam pap par pca pcc pcm pcp pcr pma pmc pmm pmp pmr ppa ppc ppm ppp ppr pra prc prm prp prr ra- raa rac ram rap rar rca rcc rcm rcp rcr rma rmc rmm rmp rmr rpa rpc rpm rpp rpr rra rrc rrm rrp rrr