a-a a-c aaa aac aak aam aar aax ac- aca acc ack acm acr acx aka akc akk akm akr ama amc amk amm amr amx ar- ara arc ark arm arr arx ax- axa axk axm axr axx c-- caa cac cak cam car cax cca ccc cck ccm ccr ccx cka ckc ckm ckx cma cmc cmk cmm cmr cmx cra crc crk crm crr crx cxc cxk cxr cxx ka- kaa kac kak kam kar kax kca kcc kck kcm kcr kcx kkc kkk kkm kkr kma kmc kmk kmm kra krc krk krr kxm m-r maa mac mak mam mar max mc- mca mcc mck mcm mcr mcx mka mkc mkk mkm mkr mkx mma mmc mmk mmm mmr mmx mra mrc mrk mrm mrr mrx mxa mxc mxr ra- raa rac rak ram rar rax rca rcc rcm rcr rcx rkc rkk rkm rma rmc rmm rmr rmx rra rrc rrk rrm rrr rxr xaa xac xak xam xar xcr xcx xma xmc xmk xmm xmr xmx xrc xrx xxx