b-u bbb bbe bbi bbl bbm bbu bbx be- beb bee bei bel bem beu bex bi- bib bie bii bil bim biu bix blb ble bli bll blm blu blx bmb bme bmi bml bmm bmu bmx bub bue bui bul bum buu bux bxb bxi bxl bxm bxx ebb ebe ebi ebl ebm ebu ebx eeb eee eel eem eex eib eie eii eil eim eiu eix elb ele eli ell elm elu elx em- emb eme emi eml emm emu emx eu- eub eue eui eul eux ex- exe exi exl exu exx ibb ibe ibi ibl ibm ibu ibx ie- iee iei iel iem iex iib iie iii iil iim iiu iix il- ilb ile ili ill ilm ilu ilx im- imb ime imi iml imm imu imx iu- iub iue iui ium ixe ixi ixl lbb lbe lbi lbl lbm lbu lbx leb lee lei lel lem leu lex lib lie lii lil lim liu lix llb lle lli lll llm llu lmb lme lmi lml lmm lmu lub lue lui lul lum luu lux lxi lxx mbb mbe mbi mbl mbm mbu mbx meb mee mei mel mem meu mex mi- mib mie mii mil mim miu mix mlb mle mli mll mlm mlu mlx mmb mme mmi mml mmm mmu mmx mub mue mui mul mum muu mux mxi mxl mxu ubb ube ubi ubl ubu ubx ueb uee uei uel uem uib uie uii uil uim uiu ulb ule uli ull ulm ulu um- umb ume umi uml umm umu uue uum uuu uxb uxu xbe xbl xbx xee xel xem xeu xex xie xii xiu xix xlb xli xlm xmi xml xmm xmu xmx xue xui xul xxi xxl xxx