-al -ly a-a a-b aaa aab aal aar aax aay ab- aba abb abl abr abx aby al- ala alb all alr alx aly ar- ara arb arl arr arx ary ax- axa axl axr axx ay- aya ayl ayr ayx baa bab bal bar bax bay bba bbb bbl bbr bbx bby bla blb bll blr blx bly bra brb brl brr brx bry bxb bxl bxx by- bya byl byr la- laa lab lal lar lax lay lba lbb lbl lbr lbx lla llb lll llr lly lra lrb lrr lry lxr lxx lya lyl lyr lyx ra- raa rab ral rar rax ray rba rbb rbl rbr rbx rla rll rlr rly rra rrb rrl rrr rxr ry- rya ryr ryy xaa xal xar xbl xbr xbx xla xlb xlr xrx xry xxl xxx xxy xyl xyr xyy yaa yab yal yar yax yay ybl ybr yby yll ylr yly yra yxa yxy yyb yyy