-al a-a a-b a-i aaa aab aai aal aax ab- aba abb abi abl abx ai- aia aib aii ail aix al- ala alb ali all alx ax- axa axi axl axx baa bab bai bal bax bba bbb bbi bbl bbx bi- bia bib bii bil bix bla blb bli bll blx bxb bxi bxl bxx ia- iaa iab iai ial iba ibb ibi ibl ibx iia iib iii iil iix il- ila ilb ili ill ilx ixi ixl la- laa lab lai lal lax lba lbb lbi lbl lbx lia lib lii lil lix lla llb lli lll lxi lxx xaa xal xbl xbx xia xii xix xla xlb xli xxi xxl xxx