b-u bbb bbi bbl bbm bbn bbs bbu bi- bib bii bil bim bin bis biu blb bli bll blm bln bls blu bmb bmi bml bmm bmn bms bmu bnb bni bnl bnn bns bnu bsb bsi bsl bsm bsn bss bsu bub bui bul bum bun bus buu ibb ibi ibl ibm ibn ibs ibu iib iii iil iim iin iis iiu il- ilb ili ill ilm iln ils ilu im- imb imi iml imm imn ims imu in- inb ini inl inm inn ins inu is- isb isi isl ism isn iss isu iu- iub iui ium ius lbb lbi lbl lbm lbs lbu lib lii lil lim lin lis liu llb lli lll llm lln lls llu lmb lmi lml lmm lmn lms lmu lnb lni lnl lnm lnn lns lnu lsb lsi lsl lsm lsn lss lsu lub lui lul lum lun lus luu mbb mbi mbl mbm mbs mbu mi- mib mii mil mim min mis miu mlb mli mll mlm mln mls mlu mmb mmi mml mmm mmn mms mmu mnb mni mnl mnm mnn mns mnu msb msi msl msm msn mss msu mub mui mul mum mun mus muu n-i nbb nbi nbl nbm nbn nbs nbu nib nii nil nim nin nis niu nlb nli nll nlm nln nls nlu nmb nmi nml nmm nmn nms nmu nnb nni nnl nnm nnn nns nnu nsb nsi nsl nsm nsn nss nsu nub nui nul num nun nus nuu sbb sbi sbl sbm sbn sbs sbu sib sii sil sim sin sis siu slb sli sll slm sln sls slu smb smi sml smm smn sms smu snb sni snl snm snn sns snu ss- ssb ssi ssl ssm ssn sss ssu sub sui sul sum sun sus suu ubb ubi ubl ubn ubs ubu uib uii uil uim uin uis uiu ulb uli ull ulm uln uls ulu um- umb umi uml umm umn ums umu un- unb uni unl unm unn uns unu usb usi usl usm usn uss usu uum uun uus uuu