-al a-a a-b a-t a-z aaa aab aal aar aat aaz ab- aba abb abl abr abt abz al- ala alb all alr alt alz ar- ara arb arl arr art arz at- ata atb atl atr att atz az- aza azb azt azz baa bab bal bar bat baz bba bbb bbl bbr bbt bla blb bll blr blt blz bra brb brl brr brt brz bta btb btl btr btt btz bza bzr bzz la- laa lab lal lar lat laz lba lbb lbl lbr lbt lla llb lll llr llt llz lra lrb lrr lrt lrz lta ltb ltl ltr ltt ltz lzr ra- raa rab ral rar rat raz rba rbb rbl rbr rbt rla rll rlr rlt rra rrb rrl rrr rrt rta rtb rtl rtr rtt rtz rza rzb taa tab tal tar tat taz tba tbb tbl tbr tbt tbz tla tll tlr tlt tlz tra trb trl trr trt trz tta ttb ttl ttr ttt tza zaa zab zar zat zaz zbb zbl zbr zbt zla zlr zlt zrl zta ztl ztr zzr zzt zzz