b-u bbb bbe bbf bbi bbl bbu be- beb bee bef bei bel beu bfb bfe bff bfi bfl bfu bi- bib bie bif bii bil biu blb ble blf bli bll blu bub bue buf bui bul buu ebb ebe ebf ebi ebl ebu eeb eee eef eel ef- efb efe eff efi efl eib eie eif eii eil eiu elb ele elf eli ell elu eu- eub eue euf eui eul fbb fbe fbf fbi fbl fbu feb fee fef fei fel feu ffe fff ffi ffl ffu fib fie fif fii fil fiu flb fle flf fli fll flu fub fue fuf fui ful fuu i-f ibb ibe ibf ibi ibl ibu ie- iee ief iei iel ifb ife iff ifi ifl ifu iib iie iif iii iil iiu il- ilb ile ilf ili ill ilu iu- iub iue iui lbb lbe lbf lbi lbl lbu leb lee lef lei lel leu lfb lfe lff lfi lfl lfu lib lie lif lii lil liu llb lle llf lli lll llu lub lue luf lui lul luu ubb ube ubf ubi ubl ubu ueb uee uef uei uel ufe uff ufi ufl ufu uib uie uif uii uil uiu ulb ule ulf uli ull ulu uue uuu