b-u bbb bbd bbe bbi bbl bbu bdb bdd bde bdi bdl bdu be- beb bed bee bei bel beu bi- bib bid bie bii bil biu blb bld ble bli bll blu bub bud bue bui bul buu dbb dbd dbe dbi dbl dbu ddb ddd dde ddi ddl ddu de- deb ded dee dei del deu di- dib did die dii dil diu dl- dlb dld dle dli dll dlu dub dud due dui dul ebb ebd ebe ebi ebl ebu ed- edb edd ede edi edl edu eeb eed eee eel eib eid eie eii eil eiu elb eld ele eli ell elu eu- eub eud eue eui eul i-d ibb ibd ibe ibi ibl ibu idb idd ide idi idl idu ie- ied iee iei iel iib iid iie iii iil iiu il- ilb ild ile ili ill ilu iu- iub iud iue iui lbb lbd lbe lbi lbl lbu ldb ldd lde ldi ldl ldu leb led lee lei lel leu lib lid lie lii lil liu llb lld lle lli lll llu lub lud lue lui lul luu ubb ube ubi ubl ubu udb udd ude udi udl udu ueb ued uee uei uel uib uid uie uii uil uiu ulb uld ule uli ull ulu uue uuu