-ey b-u bbb bbe bbi bbk bbu bby be- beb bee bei bek beu bey bi- bib bie bii bik biu biy bkb bke bkk bub bue bui buk buu buy by- bye byi byk byu ebb ebe ebi ebk ebu eby eeb eee eek eey eib eie eii eik eiu ekb eke eki eku eky eu- eub eue eui eye ibb ibe ibi ibk ibu iby ie- iee iei iek iey iib iie iii iiu ikb ike iki ikk iku iu- iub iue iui iye iyy kbb kbe kbi kbk kbu ke- keb kee kei kek key kib kie kii kik kiu kkb kke kki kkk kku kky kub kue kui kuk kuu kuy kye kyu ubb ube ubi ubk ubu uby ueb uee uei uey uib uie uii uiu ukb uke uki ukk uku uue uuu uyi uyu ybe ybi yby yeb yee yei yek yey yie yii yki ykk yue yui yuk yuu yuy yyb yye yyu yyy