b-u bbb bbd bbi bbk bbm bbu bby bdb bdd bdi bdk bdm bdu bdy bi- bib bid bii bik bim biu biy bkb bkk bkm bmb bmd bmi bmk bmm bmu bub bud bui buk bum buu buy by- byd byi byk bym byu dbb dbd dbi dbk dbm dbu dby ddb ddd ddi ddk ddm ddu ddy di- dib did dii dik dim diu diy dkb dki dkk dkm dku dmb dmd dmi dmk dmm dmu dub dud dui duk dum duy dy- dyb dyd dyk dym dyu dyy i-d ibb ibd ibi ibk ibm ibu iby idb idd idi idk idm idu idy iib iid iii iim iiu ikb iki ikk iku im- imb imd imi imm imu imy iu- iub iud iui ium iym iyy kbb kbd kbi kbk kbm kbu kdb kdk kdm kdu kdy kib kid kii kik kim kiu kkb kki kkk kkm kku kky kmb kmd kmi kmk kmm kmu kub kud kui kuk kum kuu kuy kyd kym kyu mbb mbd mbi mbk mbm mbu mdb mdd mdi mdk mdm mdu mdy mi- mib mid mii mik mim miu miy mkb mkd mkk mkm mku mky mmb mmd mmi mmk mmm mmu mub mud mui muk mum muu muy my- myb myd myk mym myu ubb ubi ubk ubu uby udb udd udi udk udm udu uib uid uii uim uiu ukb uki ukk uku um- umb umd umi umm umu uum uuu uyi uyu ybi ybm yby ydy yid yii yim yki ykk ykm ymi ymm yud yui yuk yum yuu yuy yyb yyu yyy