-er -up b-p b-u bbb bbc bbe bbh bbn bbp bbr bbu bcb bcc bce bch bcn bcp bcr bcu be- beb bec bee beh ben bep ber beu bhb bhc bhe bhh bhp bhr bhu bnb bnc bne bnn bnp bnr bnu bpb bpc bpe bph bpn bpp bpr bpu brb bre brh brn brp brr bru bub buc bue buh bun bup bur buu c-- cbb cbc cbe cbh cbn cbp cbr cbu ccb ccc cce cch ccn ccp ccr ccu ce- ceb cec cee ceh cen cep cer ceu ch- chb chc che chh chn chp chr chu cn- cnb cnc cne cnh cnn cnp cnr cnu cpb cpc cpe cph cpn cpp cpr cpu crb crc cre crh crn crp crr cru cub cuc cue cuh cun cup cur cuu ebb ebc ebe ebh ebn ebp ebr ebu ec- ecb ecc ece ech ecn ecr ecu eeb eec eee een eep eer ehb ehc ehe ehh ehn ehp ehr ehu en- enb enc ene enh enn enp enr enu ep- epb epc epe eph epn epp epr epu erb erc ere erh ern erp err eru eu- eub euc eue eun eup eur hbb hbc hbe hbh hbn hbp hbr hbu hcb hcc hce hch hcn hcp hcr he- heb hec hee heh hen hep her heu hhb hhc hhe hhh hhn hhp hhr hhu hnb hnc hne hnh hnn hnu hpb hpc hpe hph hpn hpp hpr hpu hr- hrb hrc hre hrh hrn hrp hrr hru hub huc hue huh hun hup hur huu nbb nbc nbe nbn nbp nbr nbu ncb ncc nce nch ncn ncp ncr ncu ne- neb nec nee neh nen nep ner neu nhb nhc nhe nhh nhn nhp nhr nhu nnb nnc nne nnh nnn nnp nnu npb npc npe nph npn npp npr npu nrb nrc nre nrn nrp nrr nru nub nuc nue nuh nun nup nur nuu p-p pbb pbc pbe pbn pbp pbr pbu pcb pcc pce pch pcn pcp pcr pcu peb pec pee peh pen pep per peu phb phc phe phn php phr phu pn- pnb pnc pne pnh pnn pnp pnr pnu ppb ppc ppe pph ppn ppp ppr ppu prb prc pre prh prn prp prr pru pub puc pue puh pun pup pur puu rbb rbc rbe rbh rbn rbp rbr rbu rcb rcc rce rch rcn rcp rcr rcu re- reb rec ree reh ren rep rer reu rh- rhb rhc rhe rhh rhn rhp rhr rhu rnb rnc rnh rnn rnp rnr rnu rpb rpc rpe rph rpn rpp rpr rpu rrb rrc rrh rrn rrp rrr rru rub ruc rue ruh run rup rur ruu ubb ubc ube ubh ubn ubp ubr ubu ucb ucc uce uch ucn ucp ucr ucu ueb uec uee ueh uen uep uer uhb uhc uhe uhh uhp uhr uhu un- unb unc une unh unn unp unr unu up- upb upc upe uph upn upp upr upu ur- urb urc ure urn urp urr uru uuc uue uun uur uuu

-ene bbbb bbch bbeb bbpr bbrc bcbc bcbp bccc bcec bcer bche bcnu bcpp bcru bcuc bcup bebb bebe bech becu beeb been beep beer behn behr bene benn benu berc bere bern berr beru beur bhcc bher bhur bhuu bner bnpp bnrr bpcp bphc bprc brcb brce breb brec bree bren brep brer brrr bruc brue bruh brun brup bubb bube bubu bucc buce buch bucu buen buer bueu buhe buhr bunb bune bunn bunu bupc bur- burb bure burh burn burp burr buru cbbc cbcc cbce cbcn cbcp cbcr cbcu cbec cbee cber cbpc cbpp cbre cbrh cbrn ccbc ccbn cccb cccc cccp cccu ccee cche cchp cchr ccnb ccnc ccne ccnp ccnr ccnu ccpe ccpn ccpp ccpr ccrc ccre ccrp ccuc ccup cebp cebu cec- cece cecp ceeb ceec cen- cene cepc cepe ceph cepp cepr cer- cerc cere cern cerp chbp chce chch chcp cheb chec chee cheh chen chep cher cheu chnb chnc chnr chpp chpr chrb chrc chrn chrp chrr chub chun chur cnbc cnbp cncp cnep cnrc cnrr cpbc cpce cpcu cpeb cpep cper cpnb cpre crbc crbu crcc crce crcr cre- creb crec cree creh cren crep creu crne crpc crub crue crun crup cub- cubb cube cucc cuce cucn cuer cune cunp cupe cupp cupr curb cure curn curr ebbc ebbr ebcc eben eber ebru ebur ecbc ecbe eccb eccc ecce eche ecne ecpp ecrc ecrr ecru eeee eerc ehcc eheh ehen eher eheu ehre enb- enbn enbr ence ench enee ener ennc enne ennu enp- enue enur epcc epch epec epee epen eper eph- eppc eppp eprb eprp epub erbb erbe ercc erce erch ercp ereb erec eren erer erhc erhu erne erpe errc erre erub eruc eruh erur eubc euch euer eur- eurc eure hcbc hccb hccc hcch hcpc hcrp hebb hebe hebr hech heeb heep heer hehe hehn hene henh henn henu hepc hepe hepp hepu herb herc here hern herp herr heru heue heun heur hhhh hhpc hnce hpcc hppe hpue hree hrpc hrpp hrrc hrun hubb hube huch hucu huer huhn huhu hunc hune hunh hupe hupp hure hurn hurr huru huub n-up nbbc nbcc nber nbpp ncbc nccc nccn nccp nccr nccu ncec ncee ncen ncep ncer nchc ncnc ncpc ncrc ncre ncrp ncue nebb nebe nebn nebr nebu necc nece nech necr neeb neen neep neer nehe nehu nene nenh nenu nepc nepe neph nepr nerc nere nerr neru neuc neue neun neur neuu nhcc nheb nhnn nhrc nhrp nnnn nnpr npcc nppc nren nrpc nrpn nrrc nubc nube nuce nuch nucu nuee nuer nunc nune nunn nupe nurc nure nurn nurp nurr nuru pbcc pcbc pccc pcce pcep pcer pchp pcpb pcpn pcpp pcrc pcre pcun pece pech pecr peec peen peep peer pehe pehr pen- penc pene penh penn penu pepe per- perc pere perh pern perp perr peru peun peur phcc phe- phen phrr phun pnec pneu pnpp pnup ppcc