a-a a-t aaa aam aar aat aax ama amm amr amt amx ar- ara arm arr art arx at- ata atm atr att atx ax- axa axm axr axt axx m-r maa mam mar mat max mma mmm mmr mmt mmx mra mrm mrr mrt mrx mta mtm mtr mtt mtx mxa mxr ra- raa ram rar rat rax rma rmm rmr rmt rmx rra rrm rrr rrt rta rtm rtr rtt rtx rxr t-x taa tam tar tat tax tma tmm tmr tmt tmx tra trm trr trt trx tta ttm ttr ttt ttx txt xaa xam xar xat xma xmm xmr xmt xmx xrt xrx xtm xtr xtx xxx