-er b-u bbb bbc bbe bbf bbg bbh bbn bbr bbu bcb bcc bce bcf bcg bch bcn bcr bcu be- beb bec bee bef beg beh ben ber beu bfb bfc bfe bff bfg bfh bfn bfr bfu bgb bgc bge bgf bgg bgh bgn bgr bgu bhb bhc bhe bhf bhg bhh bhr bhu bnb bnc bne bnf bng bnn bnr bnu brb bre brf brg brh brn brr bru bub buc bue buf bug buh bun bur buu c-- cbb cbc cbe cbf cbg cbh cbn cbr cbu ccb ccc cce ccf ccg cch ccn ccr ccu ce- ceb cec cee cef ceg ceh cen cer ceu cfb cfc cfe cff cfg cfh cfn cfr cfu cgb cgc cge cgg cgh cgn cgr cgu ch- chb chc che chf chg chh chn chr chu cn- cnb cnc cne cnf cng cnh cnn cnr cnu crb crc cre crf crg crh crn crr cru cub cuc cue cuf cug cuh cun cur cuu ebb ebc ebe ebf ebg ebh ebn ebr ebu ec- ecb ecc ece ecf ecg ech ecn ecr ecu eeb eec eee eef eeg een eer ef- efb efc efe eff efg efh efr egb egc ege egf egg egh egn egr egu ehb ehc ehe ehf ehg ehh ehn ehr ehu en- enb enc ene enf eng enh enn enr enu erb erc ere erf erg erh ern err eru eu- eub euc eue euf eug eun eur fbb fbc fbe fbf fbg fbh fbn fbr fbu fcb fcc fce fcf fcg fcn fcr fcu feb fec fee fef feg feh fen fer feu ffc ffe fff ffg ffh ffn ffr ffu fgb fgc fge fgf fgg fgh fgn fgr fhb fhc fhe fhf fhg fhh fhn fhr fnb fnc fne fnf fng fnh fnn fnr fnu frb frc fre frf frg frh frn frr fru fub fue fuf fug fun fur fuu gbc gbe gbf gbg gbh gbn gbr gbu gcb gcc gce gcf gcg gch gcn gcr gcu ge- geb gec gee gef geg geh gen ger geu gfb gfc gfe gff gfh gfr ggb ggc ggg ggh ggn ggr ggu ghb ghc ghe ghg ghh ghn ghr gnb gnc gne gnf gnn gnr gnu grb grc gre grf grg grh grn grr gru gu- gub guc gue guf gug gun gur guu hbb hbc hbe hbf hbg hbh hbn hbr hbu hcb hcc hce hcf hcg hch hcn hcr he- heb hec hee hef heg heh hen her heu hfb hfc hfe hff hfg hfh hfn hfr hfu hgb hgc hge hgf hgg hgh hgn hgr hgu hhb hhc hhe hhf hhg hhh hhn hhr hhu hnb hnc hne hnf hng hnh hnn hnu hr- hrb hrc hre hrf hrg hrh hrn hrr hru hub huc hue huf hug huh hun hur huu nbb nbc nbe nbf nbg nbn nbr nbu ncb ncc nce ncf ncg nch ncn ncr ncu ne- neb nec nee nef neg neh nen ner neu nfb nfc nfe nff nfn nfr nfu ngb ngc nge ngf ngg ngh ngn ngu nhb nhc nhe nhf nhg nhh nhn nhr nhu nnb nnc nne nnf nng nnh nnn nnu nrb nrc nre nrf nrg nrn nrr nru nub nuc nue nug nuh nun nur nuu rbb rbc rbe rbf rbg rbh rbn rbr rbu rcb rcc rce rcf rcg rch rcn rcr rcu re- reb rec ree ref reg reh ren rer reu rfb rfc rfe rff rfg rfh rfn rfr rfu rgb rgc rge rgf rgg rgh rgn rgr rh- rhb rhc rhe rhf rhg rhh rhn rhr rhu rnb rnc rng rnh rnn rnr rnu rrb rrc rrf rrg rrh rrn rrr rru rub ruc rue ruf rug ruh run rur ruu ubb ubc ube ubf ubg ubh ubn ubr ubu ucb ucc uce ucf ucg uch ucn ucr ucu ueb uec uee uef ueg ueh uen uer ufc ufe uff ufg ufh ufn ufr ufu ugb ugc uge ugf ugg ugh ugn ugr ugu uhb uhc uhe uhf uhh uhr uhu un- unb unc une unf ung unh unn unr unu ur- urb urc ure urf urg urn urr uru uuc uue uug uun uur uuu

-ene bbbb bbch bbeb bbfc bbfn bbng bbrc bbrg bcbc bcbg bccc bcec bcer bcfc bche bcnu bcru bcuc bebb bebe bech becu beeb beef beeg been beer befe beff begg begu behn behr bene beng benn benu berc bere berg bern berr beru beur bfgf bgfc bgun bhcc bher bhff bhur bhuu bneg bner bnrr brcb brce breb brec bree bref breg bren brer brfc brfu brrr bruc brue brug bruh brun bubb bube bubu bucc buce buch bucu buen buer bueu bufc bufe buff bufr buge bugg bugh buhe buhr bunb bune bung bunn bunu bur- burb bure burg burh burn burr buru cbbc cbcc cbce cbcn cbcr cbcu cbec cbee cbef cber cbfb cbfc cbgb cbre cbrh cbrn ccbc ccbn cccb cccc cccf cccu ccee ccfc ccff ccgc cche cchr ccnb ccnc ccne ccnf ccnr ccnu ccrc ccre ccrf ccrg ccuc cebu cec- cece ceeb ceec cef- cefc cefn cege cen- cene ceng cer- cerc cere cerf cern cfbc cfbn cfbr cfcb cfcf cfcn cffb cffr cfgn cfnb cfnr cfrb cfre cfrg cfrn cfun cgcc cgcg cger cgfc chce chch cheb chec chee chef cheh chen cher cheu chfc chfr chgb chge chgn chnb chnc chnr chrb chrc chrf chrn chrr chub chug chun chur cnbc cnrc cnrr crbc crbu crcc crce crcr cre- creb crec cree creg creh cren creu crfc crne crub crue crug crun cub- cubb cube cucc cuce cucn cuer cufc cuff cune curb cure curf curn curr ebbc ebbr ebcc eben eber ebfc ebru ebur ecbc ecbe eccb eccc ecce ecef ecfc ecfr eche ecne ecrc ecrf ecrr ecru eeee eefe eefn eeng eerc eerg ef-g efbr efen efgh egbe egbu egcc egcg egcr egec egee eger egfh egfr eggb egge eggh eghe eghh egne egre ehcc eheh ehen eher eheu