-ic b-u bbb bbc bbe bbf bbi bbl bbu bcb bcc bce bcf bci bcl bcu be- beb bec bee bef bei bel beu bfb bfc bfe bff bfi bfl bfu bi- bib bic bie bif bii bil biu blb blc ble blf bli bll blu bub buc bue buf bui bul buu c-- cbb cbc cbe cbf cbi cbl cbu ccb ccc cce ccf cci ccl ccu ce- ceb cec cee cef cei cel ceu cfb cfc cfe cff cfi cfl cfu ci- cib cic cie cif cii cil ciu cl- clb clc cle clf cli cll clu cub cuc cue cuf cui cul cuu ebb ebc ebe ebf ebi ebl ebu ec- ecb ecc ece ecf eci ecl ecu eeb eec eee eef eel ef- efb efc efe eff efi efl eib eic eie eif eii eil eiu elb elc ele elf eli ell elu eu- eub euc eue euf eui eul fbb fbc fbe fbf fbi fbl fbu fcb fcc fce fcf fci fcl fcu feb fec fee fef fei fel feu ffc ffe fff ffi ffl ffu fib fic fie fif fii fil fiu flb flc fle flf fli fll flu fub fue fuf fui ful fuu i-f ibb ibc ibe ibf ibi ibl ibu icb icc ice icf ici icl icu ie- iec iee ief iei iel ifb ifc ife iff ifi ifl ifu iib iic iie iif iii iil iiu il- ilb ilc ile ilf ili ill ilu iu- iub iuc iue iui lbb lbc lbe lbf lbi lbl lbu lcb lcc lce lcf lci lcl lcu leb lec lee lef lei lel leu lfb lfc lfe lff lfi lfl lfu lib lic lie lif lii lil liu llb llc lle llf lli lll llu lub luc lue luf lui lul luu ubb ubc ube ubf ubi ubl ubu ucb ucc uce ucf uci ucl ucu ueb uec uee uef uei uel ufc ufe uff ufi ufl ufu uib uic uie uif uii uil uiu ulb ulc ule ulf uli ull ulu uuc uue uuu