-al a-a a-t aaa aal aar aat aax al- ala all alr alt alx ar- ara arl arr art arx at- ata atl atr att atx ax- axa axl axr axt axx la- laa lal lar lat lax lla lll llr llt lra lrr lrt lta ltl ltr ltt ltx lxr lxx ra- raa ral rar rat rax rla rll rlr rlt rra rrl rrr rrt rta rtl rtr rtt rtx rxr t-x taa tal tar tat tax tla tll tlr tlt tlx tra trl trr trt trx tta ttl ttr ttt ttx txl txt xaa xal xar xat xla xlr xlt xrt xrx xtr xtx xxl xxx