b-u bbb bbd bbe bbi bbu bdb bdd bde bdi bdu be- beb bed bee bei beu bi- bib bid bie bii biu bub bud bue bui buu dbb dbd dbe dbi dbu ddb ddd dde ddi ddu de- deb ded dee dei deu di- dib did die dii diu dub dud due dui ebb ebd ebe ebi ebu ed- edb edd ede edi edu eeb eed eee eib eid eie eii eiu eu- eub eud eue eui i-d ibb ibd ibe ibi ibu idb idd ide idi idu ie- ied iee iei iib iid iie iii iiu iu- iub iud iue iui ubb ube ubi ubu udb udd ude udi udu ueb ued uee uei uib uid uie uii uiu uue uuu