b-u bbb bbc bbe bbh bbk bbl bbn bbu bcb bcc bce bch bck bcl bcn bcu be- beb bec bee beh bek bel ben beu bhb bhc bhe bhh bhk bhl bhu bkb bkc bke bkk bkl bkn blb blc ble blh blk bll bln blu bnb bnc bne bnk bnl bnn bnu bub buc bue buh buk bul bun buu c-- cbb cbc cbe cbh cbk cbl cbn cbu ccb ccc cce cch cck ccl ccn ccu ce- ceb cec cee ceh cek cel cen ceu ch- chb chc che chh chk chl chn chu ckb ckc ckh cl- clb clc cle clh clk cll cln clu cn- cnb cnc cne cnh cnl cnn cnu cub cuc cue cuh cuk cul cun cuu ebb ebc ebe ebh ebk ebl ebn ebu ec- ecb ecc ece ech eck ecl ecn ecu eeb eec eee eek eel een ehb ehc ehe ehh ehl ehn ehu ekb ekc eke ekh ekl eku elb elc ele elh elk ell eln elu en- enb enc ene enh enk enl enn enu eu- eub euc eue eul eun hbb hbc hbe hbh hbk hbl hbn hbu hcb hcc hce hch hck hcl hcn he- heb hec hee heh hek hel hen heu hhb hhc hhe hhh hhk hhl hhn hhu hkb hkh hkk hkl hkn hku hlb hlc hle hlh hll hln hlu hnb hnc hne hnh hnk hnl hnn hnu hub huc hue huh huk hul hun huu kbb kbc kbe kbh kbk kbl kbn kbu kcb kcc kce kch kck kcl kcn kcu ke- keb kec kee keh kek kel ken khe khh khk khn khu kkb kkc kke kkh kkk kkl kkn kku kl- klb klc klh klu kn- knc kne knk knl knn knu kub kuc kue kuh kuk kul kun kuu lbb lbc lbe lbh lbk lbl lbu lcb lcc lce lch lck lcl lcn lcu leb lec lee leh lek lel len leu lhb lhc lhh lhk lhu lkb lkh lkl llb llc lle llk lll lln llu lnb lnc lne lnh lnk lnl lnn lnu lub luc lue luh luk lul lun luu nbb nbc nbe nbk nbl nbn nbu ncb ncc nce nch nck ncl ncn ncu ne- neb nec nee neh nek nel nen neu nhb nhc nhe nhh nhk nhl nhn nhu nkc nke nkk nkn nku nlb nlc nle nlh nlk nll nln nlu nnb nnc nne nnh nnk nnl nnn nnu nub nuc nue nuh nuk nul nun nuu ubb ubc ube ubh ubk ubl ubn ubu ucb ucc uce uch uck ucl ucn ucu ueb uec uee ueh uel uen uhb uhc uhe uhh uhl uhu ukb ukc uke ukk ukl ukn uku ulb ulc ule ulk ull uln ulu un- unb unc une unh unk unl unn unu uuc uue uun uuu