b-u bbb bbd bbi bbl bbm bbn bbu bdb bdd bdi bdl bdm bdu bi- bib bid bii bil bim bin biu blb bld bli bll blm bln blu bmb bmd bmi bml bmm bmn bmu bnb bnd bni bnl bnn bnu bub bud bui bul bum bun buu dbb dbd dbi dbl dbm dbn dbu ddb ddd ddi ddl ddm ddn ddu di- dib did dii dil dim din diu dl- dlb dld dli dll dlm dlu dmb dmd dmi dml dmm dmn dmu dnb dnd dni dnl dnm dnn dub dud dui dul dum dun i-d ibb ibd ibi ibl ibm ibn ibu idb idd idi idl idm idn idu iib iid iii iil iim iin iiu il- ilb ild ili ill ilm iln ilu im- imb imd imi iml imm imn imu in- inb ind ini inl inm inn inu iu- iub iud iui ium lbb lbd lbi lbl lbm lbu ldb ldd ldi ldl ldm ldn ldu lib lid lii lil lim lin liu llb lld lli lll llm lln llu lmb lmd lmi lml lmm lmn lmu lnb lnd lni lnl lnm lnn lnu lub lud lui lul lum lun luu mbb mbd mbi mbl mbm mbu mdb mdd mdi mdl mdm mdn mdu mi- mib mid mii mil mim min miu mlb mld mli mll mlm mln mlu mmb mmd mmi mml mmm mmn mmu mnb mni mnl mnm mnn mnu mub mud mui mul mum mun muu n-i nbb nbd nbi nbl nbm nbn nbu ndb ndd ndi ndl ndm ndn ndu nib nid nii nil nim nin niu nlb nld nli nll nlm nln nlu nmb nmd nmi nml nmm nmn nmu nnb nni nnl nnm nnn nnu nub nud nui nul num nun nuu ubb ubi ubl ubn ubu udb udd udi udl udm udn udu uib uid uii uil uim uin uiu ulb uld uli ull ulm uln ulu um- umb umd umi uml umm umn umu un- unb und uni unl unm unn unu uum uun uuu