-ic b-u bbb bbc bbd bbe bbi bbl bbu bcb bcc bcd bce bci bcl bcu bdb bdc bdd bde bdi bdl bdu be- beb bec bed bee bei bel beu bi- bib bic bid bie bii bil biu blb blc bld ble bli bll blu bub buc bud bue bui bul buu c-- cbb cbc cbd cbe cbi cbl cbu ccb ccc ccd cce cci ccl ccu cdb cdc cdd cde cdi cdl cdu ce- ceb cec ced cee cei cel ceu ci- cib cic cid cie cii cil ciu cl- clb clc cld cle cli cll clu cub cuc cud cue cui cul cuu dbb dbc dbd dbe dbi dbl dbu dcb dcc dcd dce dci dcl dcu ddb ddc ddd dde ddi ddl ddu de- deb dec ded dee dei del deu di- dib dic did die dii dil diu dl- dlb dlc dld dle dli dll dlu dub duc dud due dui dul ebb ebc ebd ebe ebi ebl ebu ec- ecb ecc ecd ece eci ecl ecu ed- edb edc edd ede edi edl edu eeb eec eed eee eel eib eic eid eie eii eil eiu elb elc eld ele eli ell elu eu- eub euc eud eue eui eul i-d ibb ibc ibd ibe ibi ibl ibu icb icc icd ice ici icl icu idb idc idd ide idi idl idu ie- iec ied iee iei iel iib iic iid iie iii iil iiu il- ilb ilc ild ile ili ill ilu iu- iub iuc iud iue iui lbb lbc lbd lbe lbi lbl lbu lcb lcc lcd lce lci lcl lcu ldb ldc ldd lde ldi ldl ldu leb lec led lee lei lel leu lib lic lid lie lii lil liu llb llc lld lle lli lll llu lub luc lud lue lui lul luu ubb ubc ube ubi ubl ubu ucb ucc ucd uce uci ucl ucu udb udc udd ude udi udl udu ueb uec ued uee uei uel uib uic uid uie uii uil uiu ulb ulc uld ule uli ull ulu uuc uue uuu