-al a-a a-b a-i aaa aab aad aai aal ab- aba abb abd abi abl ad- ada adb add adi adl ai- aia aib aid aii ail al- ala alb ald ali all baa bab bad bai bal bba bbb bbd bbi bbl bda bdb bdd bdi bdl bi- bia bib bid bii bil bla blb bld bli bll daa dab dad dai dal dba dbb dbd dbi dbl dda ddb ddd ddi ddl di- dia dib did dii dil dl- dla dlb dld dli dll i-d ia- iaa iab iad iai ial iba ibb ibd ibi ibl ida idb idd idi idl iia iib iid iii iil il- ila ilb ild ili ill la- laa lab lad lai lal lba lbb lbd lbi lbl lda ldb ldd ldi ldl lia lib lid lii lil lla llb lld lli lll