b-u bbb bbc bbe bbf bbh bbl bbn bbu bcb bcc bce bcf bch bcl bcn bcu be- beb bec bee bef beh bel ben beu bfb bfc bfe bff bfh bfl bfn bfu bhb bhc bhe bhf bhh bhl bhu blb blc ble blf blh bll bln blu bnb bnc bne bnf bnl bnn bnu bub buc bue buf buh bul bun buu c-- cbb cbc cbe cbf cbh cbl cbn cbu ccb ccc cce ccf cch ccl ccn ccu ce- ceb cec cee cef ceh cel cen ceu cfb cfc cfe cff cfh cfl cfn cfu ch- chb chc che chf chh chl chn chu cl- clb clc cle clf clh cll cln clu cn- cnb cnc cne cnf cnh cnl cnn cnu cub cuc cue cuf cuh cul cun cuu ebb ebc ebe ebf ebh ebl ebn ebu ec- ecb ecc ece ecf ech ecl ecn ecu eeb eec eee eef eel een ef- efb efc efe eff efh efl ehb ehc ehe ehf ehh ehl ehn ehu elb elc ele elf elh ell eln elu en- enb enc ene enf enh enl enn enu eu- eub euc eue euf eul eun fbb fbc fbe fbf fbh fbl fbn fbu fcb fcc fce fcf fcl fcn fcu feb fec fee fef feh fel fen feu ffc ffe fff ffh ffl ffn ffu fhb fhc fhe fhf fhh fhl fhn flb flc fle flf fll fln flu fnb fnc fne fnf fnh fnl fnn fnu fub fue fuf ful fun fuu hbb hbc hbe hbf hbh hbl hbn hbu hcb hcc hce hcf hch hcl hcn he- heb hec hee hef heh hel hen heu hfb hfc hfe hff hfh hfl hfn hfu hhb hhc hhe hhf hhh hhl hhn hhu hlb hlc hle hlf hlh hll hln hlu hnb hnc hne hnf hnh hnl hnn hnu hub huc hue huf huh hul hun huu lbb lbc lbe lbf lbh lbl lbu lcb lcc lce lcf lch lcl lcn lcu leb lec lee lef leh lel len leu lfb lfc lfe lff lfh lfl lfn lfu lhb lhc lhf lhh lhu llb llc lle llf lll lln llu lnb lnc lne lnh lnl lnn lnu lub luc lue luf luh lul lun luu nbb nbc nbe nbf nbl nbn nbu ncb ncc nce ncf nch ncl ncn ncu ne- neb nec nee nef neh nel nen neu nfb nfc nfe nff nfl nfn nfu nhb nhc nhe nhf nhh nhl nhn nhu nlb nlc nle nlf nlh nll nln nlu nnb nnc nne nnf nnh nnl nnn nnu nub nuc nue nuh nul nun nuu ubb ubc ube ubf ubh ubl ubn ubu ucb ucc uce ucf uch ucl ucn ucu ueb uec uee uef ueh uel uen ufc ufe uff ufh ufl ufn ufu uhb uhc uhe uhf uhh uhl uhu ulb ulc ule ulf ull uln ulu un- unb unc une unf unh unl unn unu uuc uue uun uuu