bbb bbd bbe bbi bbl bdb bdd bde bdi bdl be- beb bed bee bei bel bi- bib bid bie bii bil blb bld ble bli bll dbb dbd dbe dbi dbl ddb ddd dde ddi ddl de- deb ded dee dei del di- dib did die dii dil dl- dlb dld dle dli dll ebb ebd ebe ebi ebl ed- edb edd ede edi edl eeb eed eee eel eib eid eie eii eil elb eld ele eli ell i-d ibb ibd ibe ibi ibl idb idd ide idi idl ie- ied iee iei iel iib iid iie iii iil il- ilb ild ile ili ill lbb lbd lbe lbi lbl ldb ldd lde ldi ldl leb led lee lei lel lib lid lie lii lil llb lld lle lli lll