-ic b-u bbb bbc bbd bbe bbi bbl bbn bbu bcb bcc bcd bce bci bcl bcn bcu bdb bdc bdd bde bdi bdl bdu be- beb bec bed bee bei bel ben beu bi- bib bic bid bie bii bil bin biu blb blc bld ble bli bll bln blu bnb bnc bnd bne bni bnl bnn bnu bub buc bud bue bui bul bun buu c-- cbb cbc cbd cbe cbi cbl cbn cbu ccb ccc ccd cce cci ccl ccn ccu cdb cdc cdd cde cdi cdl cdn cdu ce- ceb cec ced cee cei cel cen ceu ci- cib cic cid cie cii cil cin ciu cl- clb clc cld cle cli cll cln clu cn- cnb cnc cnd cne cni cnl cnn cnu cub cuc cud cue cui cul cun cuu dbb dbc dbd dbe dbi dbl dbn dbu dcb dcc dcd dce dci dcl dcn dcu ddb ddc ddd dde ddi ddl ddn ddu de- deb dec ded dee dei del den deu di- dib dic did die dii dil din diu dl- dlb dlc dld dle dli dll dlu dnb dnc dnd dne dni dnl dnn dub duc dud due dui dul dun ebb ebc ebd ebe ebi ebl ebn ebu ec- ecb ecc ecd ece eci ecl ecn ecu ed- edb edc edd ede edi edl edn edu eeb eec eed eee eel een eib eic eid eie eii eil ein eiu elb elc eld ele eli ell eln elu en- enb enc end ene eni enl enn enu eu- eub euc eud eue eui eul eun i-d ibb ibc ibd ibe ibi ibl ibn ibu icb icc icd ice ici icl icn icu idb idc idd ide idi idl idn idu ie- iec ied iee iei iel ien iib iic iid iie iii iil iin iiu il- ilb ilc ild ile ili ill iln ilu in- inb inc ind ine ini inl inn inu iu- iub iuc iud iue iui lbb lbc lbd lbe lbi lbl lbu lcb lcc lcd lce lci lcl lcn lcu ldb ldc ldd lde ldi ldl ldn ldu leb lec led lee lei lel len leu lib lic lid lie lii lil lin liu llb llc lld lle lli lll lln llu lnb lnc lnd lne lni lnl lnn lnu lub luc lud lue lui lul lun luu n-i nbb nbc nbd nbe nbi nbl nbn nbu ncb ncc ncd nce nci ncl ncn ncu ndb ndc ndd nde ndi ndl ndn ndu ne- neb nec ned nee nei nel nen neu nib nic nid nie nii nil nin niu nlb nlc nld nle nli nll nln nlu nnb nnc nne nni nnl nnn nnu nub nuc nud nue nui nul nun nuu ubb ubc ube ubi ubl ubn ubu ucb ucc ucd uce uci ucl ucn ucu udb udc udd ude udi udl udn udu ueb uec ued uee uei uel uen uib uic uid uie uii uil uin uiu ulb ulc uld ule uli ull uln ulu un- unb unc und une uni unl unn unu uuc uue uun uuu