b-u bbb bbc bbe bbh bbl bbm bbn bbu bcb bcc bce bch bcl bcm bcn bcu be- beb bec bee beh bel bem ben beu bhb bhc bhe bhh bhl bhm bhu blb blc ble blh bll blm bln blu bmb bmc bme bmh bml bmm bmn bmu bnb bnc bne bnl bnn bnu bub buc bue buh bul bum bun buu c-- cbb cbc cbe cbh cbl cbm cbn cbu ccb ccc cce cch ccl ccm ccn ccu ce- ceb cec cee ceh cel cem cen ceu ch- chb chc che chh chl chm chn chu cl- clb clc cle clh cll clm cln clu cmb cmc cme cmh cml cmm cmn cmu cn- cnb cnc cne cnh cnl cnm cnn cnu cub cuc cue cuh cul cum cun cuu ebb ebc ebe ebh ebl ebm ebn ebu ec- ecb ecc ece ech ecl ecm ecn ecu eeb eec eee eel eem een ehb ehc ehe ehh ehl ehm ehn ehu elb elc ele elh ell elm eln elu em- emb emc eme emh eml emm emn emu en- enb enc ene enh enl enm enn enu eu- eub euc eue eul eun hbb hbc hbe hbh hbl hbm hbn hbu hcb hcc hce hch hcl hcm hcn he- heb hec hee heh hel hem hen heu hhb hhc hhe hhh hhl hhm hhn hhu hlb hlc hle hlh hll hlm hln hlu hmb hmc hme hmh hml hmm hmu hnb hnc hne hnh hnl hnn hnu hub huc hue huh hul hum hun huu lbb lbc lbe lbh lbl lbm lbu lcb lcc lce lch lcl lcm lcn lcu leb lec lee leh lel lem len leu lhb lhc lhh lhu llb llc lle lll llm lln llu lmb lmc lme lmh lml lmm lmn lmu lnb lnc lne lnh lnl lnm lnn lnu lub luc lue luh lul lum lun luu mbb mbc mbe mbh mbl mbm mbu mc- mcb mcc mce mch mcl mcm mcn mcu meb mec mee meh mel mem men meu mhc mhh mhl mhm mhn mhu mlb mlc mle mlh mll mlm mln mlu mmb mmc mme mmh mml mmm mmn mmu mnb mnc mne mnl mnm mnn mnu mub muc mue muh mul mum mun muu nbb nbc nbe nbl nbm nbn nbu ncb ncc nce nch ncl ncm ncn ncu ne- neb nec nee neh nel nem nen neu nhb nhc nhe nhh nhl nhm nhn nhu nlb nlc nle nlh nll nlm nln nlu nmb nmc nme nmh nml nmm nmn nmu nnb nnc nne nnh nnl nnm nnn nnu nub nuc nue nuh nul num nun nuu ubb ubc ube ubh ubl ubn ubu ucb ucc uce uch ucl ucm ucn ucu ueb uec uee ueh uel uem uen uhb uhc uhe uhh uhl uhm uhu ulb ulc ule ull ulm uln ulu um- umb umc ume umh uml umm umn umu un- unb unc une unh unl unm unn unu uuc uue uum uun uuu