-ic b-u bbb bbc bbd bbe bbf bbi bbn bbu bcb bcc bcd bce bcf bci bcn bcu bdb bdc bdd bde bdf bdi bdu be- beb bec bed bee bef bei ben beu bfb bfc bfd bfe bff bfi bfn bfu bi- bib bic bid bie bif bii bin biu bnb bnc bnd bne bnf bni bnn bnu bub buc bud bue buf bui bun buu c-- cbb cbc cbd cbe cbf cbi cbn cbu ccb ccc ccd cce ccf cci ccn ccu cdb cdc cdd cde cdf cdi cdn cdu ce- ceb cec ced cee cef cei cen ceu cfb cfc cfd cfe cff cfi cfn cfu ci- cib cic cid cie cif cii cin ciu cn- cnb cnc cnd cne cnf cni cnn cnu cub cuc cud cue cuf cui cun cuu dbb dbc dbd dbe dbf dbi dbn dbu dcb dcc dcd dce dcf dci dcn dcu ddb ddc ddd dde ddf ddi ddn ddu de- deb dec ded dee def dei den deu dfb dfc dfd dfe dff dfi dfn dfu di- dib dic did die dif dii din diu dnb dnc dnd dne dnf dni dnn dub duc dud due duf dui dun ebb ebc ebd ebe ebf ebi ebn ebu ec- ecb ecc ecd ece ecf eci ecn ecu ed- edb edc edd ede edf edi edn edu eeb eec eed eee eef een ef- efb efc efd efe eff efi eib eic eid eie eif eii ein eiu en- enb enc end ene enf eni enn enu eu- eub euc eud eue euf eui eun fbb fbc fbd fbe fbf fbi fbn fbu fcb fcc fcd fce fcf fci fcn fcu fdb fdc fdd fde fdf fdi fdn fdu feb fec fed fee fef fei fen feu ffc ffd ffe fff ffi ffn ffu fib fic fid fie fif fii fin fiu fnb fnc fnd fne fnf fni fnn fnu fub fud fue fuf fui fun fuu i-d i-f ibb ibc ibd ibe ibf ibi ibn ibu icb icc icd ice icf ici icn icu idb idc idd ide idf idi idn idu ie- iec ied iee ief iei ien ifb ifc ifd ife iff ifi ifn ifu iib iic iid iie iif iii iin iiu in- inb inc ind ine inf ini inn inu iu- iub iuc iud iue iui n-i nbb nbc nbd nbe nbf nbi nbn nbu ncb ncc ncd nce ncf nci ncn ncu ndb ndc ndd nde ndf ndi ndn ndu ne- neb nec ned nee nef nei nen neu nfb nfc nfd nfe nff nfi nfn nfu nib nic nid nie nif nii nin niu nnb nnc nne nnf nni nnn nnu nub nuc nud nue nui nun nuu ubb ubc ube ubf ubi ubn ubu ucb ucc ucd uce ucf uci ucn ucu udb udc udd ude udf udi udn udu ueb uec ued uee uef uei uen ufc ufd ufe uff ufi ufn ufu uib uic uid uie uif uii uin uiu un- unb unc und une unf uni unn unu uuc uue uun uuu