b-u bbb bbe bbf bbg bbi bbl bbn bbu be- beb bee bef beg bei bel ben beu bfb bfe bff bfg bfi bfl bfn bfu bgb bge bgf bgg bgi bgl bgn bgu bi- bib bie bif big bii bil bin biu blb ble blf blg bli bll bln blu bnb bne bnf bng bni bnl bnn bnu bub bue buf bug bui bul bun buu ebb ebe ebf ebg ebi ebl ebn ebu eeb eee eef eeg eel een ef- efb efe eff efg efi efl egb ege egf egg egi egl egn egu eib eie eif eig eii eil ein eiu elb ele elf elg eli ell eln elu en- enb ene enf eng eni enl enn enu eu- eub eue euf eug eui eul eun fbb fbe fbf fbg fbi fbl fbn fbu feb fee fef feg fei fel fen feu ffe fff ffg ffi ffl ffn ffu fgb fge fgf fgg fgi fgl fgn fib fie fif fig fii fil fin fiu flb fle flf flg fli fll fln flu fnb fne fnf fng fni fnl fnn fnu fub fue fuf fug fui ful fun fuu gbe gbf gbg gbi gbl gbn gbu ge- geb gee gef geg gei gel gen geu gfb gfe gff gfi gfl ggb ggg ggi ggn ggu gib gie gif gig gii gil gin giu glb gle glf glg gli gll gln glu gnb gne gnf gni gnl gnn gnu gu- gub gue guf gug gui gul gun guu i-f ibb ibe ibf ibg ibi ibl ibn ibu ie- iee ief ieg iei iel ien ifb ife iff ifg ifi ifl ifn ifu igb ige igf igg igi igl ign igu iib iie iif iii iil iin iiu il- ilb ile ilf ilg ili ill iln ilu in- inb ine inf ing ini inl inn inu iu- iub iue iug iui lbb lbe lbf lbg lbi lbl lbu leb lee lef leg lei lel len leu lfb lfe lff lfg lfi lfl lfn lfu lgb lge lgf lgg lgi lgl lgn lgu lib lie lif lig lii lil lin liu llb lle llf llg lli lll lln llu lnb lne lng lni lnl lnn lnu lub lue luf lug lui lul lun luu n-i nbb nbe nbf nbg nbi nbl nbn nbu ne- neb nee nef neg nei nel nen neu nfb nfe nff nfi nfl nfn nfu ngb nge ngf ngg ngi ngl ngn ngu nib nie nif nig nii nil nin niu nlb nle nlf nlg nli nll nln nlu nnb nne nnf nng nni nnl nnn nnu nub nue nug nui nul nun nuu ubb ube ubf ubg ubi ubl ubn ubu ueb uee uef ueg uei uel uen ufe uff ufg ufi ufl ufn ufu ugb uge ugf ugg ugi ugl ugn ugu uib uie uif uig uii uil uin uiu ulb ule ulf ulg uli ull uln ulu un- unb une unf ung uni unl unn unu uue uug uun uuu