b-u bbb bbd bbe bbf bbg bbi bbn bbu bdb bdd bde bdf bdg bdi bdu be- beb bed bee bef beg bei ben beu bfb bfd bfe bff bfg bfi bfn bfu bgb bgd bge bgf bgg bgi bgn bgu bi- bib bid bie bif big bii bin biu bnb bnd bne bnf bng bni bnn bnu bub bud bue buf bug bui bun buu dbb dbd dbe dbf dbg dbi dbn dbu ddb ddd dde ddf ddg ddi ddn ddu de- deb ded dee def deg dei den deu dfb dfd dfe dff dfg dfi dfn dfu dgd dge dgf dgg dgi dgn dgu di- dib did die dif dig dii din diu dnb dnd dne dnf dng dni dnn dub dud due duf dug dui dun ebb ebd ebe ebf ebg ebi ebn ebu ed- edb edd ede edf edg edi edn edu eeb eed eee eef eeg een ef- efb efd efe eff efg efi egb egd ege egf egg egi egn egu eib eid eie eif eig eii ein eiu en- enb end ene enf eng eni enn enu eu- eub eud eue euf eug eui eun fbb fbd fbe fbf fbg fbi fbn fbu fdb fdd fde fdf fdg fdi fdn fdu feb fed fee fef feg fei fen feu ffd ffe fff ffg ffi ffn ffu fgb fgd fge fgf fgg fgi fgn fib fid fie fif fig fii fin fiu fnb fnd fne fnf fng fni fnn fnu fub fud fue fuf fug fui fun fuu g-d gbd gbe gbf gbg gbi gbn gbu gdb gdd gde gdf gdi gdn gdu ge- geb ged gee gef geg gei gen geu gfb gfd gfe gff gfi ggb ggd ggg ggi ggn ggu gib gid gie gif gig gii gin giu gnb gnd gne gnf gni gnn gnu gu- gub gud gue guf gug gui gun guu i-d i-f ibb ibd ibe ibf ibg ibi ibn ibu idb idd ide idf idg idi idn idu ie- ied iee ief ieg iei ien ifb ifd ife iff ifg ifi ifn ifu igb igd ige igf igg igi ign igu iib iid iie iif iii iin iiu in- inb ind ine inf ing ini inn inu iu- iub iud iue iug iui n-i nbb nbd nbe nbf nbg nbi nbn nbu ndb ndd nde ndf ndg ndi ndn ndu ne- neb ned nee nef neg nei nen neu nfb nfd nfe nff nfi nfn nfu ngb ngd nge ngf ngg ngi ngn ngu nib nid nie nif nig nii nin niu nnb nne nnf nng nni nnn nnu nub nud nue nug nui nun nuu ubb ube ubf ubg ubi ubn ubu udb udd ude udf udg udi udn udu ueb ued uee uef ueg uei uen ufd ufe uff ufg ufi ufn ufu ugb uge ugf ugg ugi ugn ugu uib uid uie uif uig uii uin uiu un- unb und une unf ung uni unn unu uue uug uun uuu