b-u bbb bbd bbe bbi bbu bdb bdd bde bdi bdu bdz be- beb bed bee bei beu bez bi- bib bid bie bii biu biz bub bud bue bui buu buz bzd bze bzu bzz dbb dbd dbe dbi dbu dbz ddb ddd dde ddi ddu ddz de- deb ded dee dei deu dez di- dib did die dii diu diz dub dud due dui duz dzb dzd dze dzi dzu ebb ebd ebe ebi ebu ed- edb edd ede edi edu eeb eed eee eib eid eie eii eiu eu- eub eud eue eui eze ezz i-d ibb ibd ibe ibi ibu ibz idb idd ide idi idu ie- ied iee iei iib iid iie iii iiu iu- iub iud iue iui iuz ize izi izu izz ubb ube ubi ubu udb udd ude udi udu ueb ued uee uei uib uid uie uii uiu uue uuu uzb uzi uzu zbb zeb zed zee zez zib zid zie ziz zub zud zui zuz zzz