-ene bbbb bbch bbeb bbpr bbrc bcbc bcbp bccc bcec bcer bche bcpp bebb bebe bech beeb been beep beer behn behr bene benn berc bere bern berr bhcc bher bner bnpp bnrr bpcp bphc bprc brcb brce breb brec bree bren brep brer brrr cbbc cbcc cbce cbcn cbcp cbcr cbec cbee cber cbpc cbpp cbre cbrh cbrn ccbc ccbn cccb cccc cccp ccee cche cchp cchr ccnb ccnc ccne ccnp ccnr ccpe ccpn ccpp ccpr ccrc ccre ccrp cebp 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 chnb chnc chnr chpp chpr chrb chrc chrn chrp chrr cnbc cnbp cncp cnep cnrc cnrr cpbc cpce cpeb cpep cper cpnb cpre crbc crcc crce crcr cre- creb crec cree creh cren crep crne crpc ebbc ebbr ebcc eben eber ecbc ecbe eccb eccc ecce eche ecne ecpp ecrc ecrr eeee eerc ehcc eheh ehen eher ehre enb- enbn enbr ence ench enee ener ennc enne enp- epcc epch epec epee epen eper eph- eppc eppp eprb eprp erbb erbe ercc erce erch ercp ereb erec eren erer erhc erne erpe errc erre hcbc hccb hccc hcch hcpc hcrp hebb hebe hebr hech heeb heep heer hehe hehn hene henh henn hepc hepe hepp herb herc here hern herp herr hhhh hhpc hnce hpcc hppe hree hrpc hrpp hrrc nbbc nbcc nber nbpp ncbc nccc nccn nccp nccr ncec ncee ncen ncep ncer nchc ncnc ncpc ncrc ncre ncrp nebb nebe nebn nebr necc nece nech necr neeb neen neep neer nehe nene nenh nepc nepe neph nepr nerc nere nerr nhcc nheb nhnn nhrc nhrp nnnn nnpr npcc nppc nren nrpc nrpn nrrc pbcc pcbc pccc pcce pcep pcer pchp pcpb pcpn pcpp pcrc pcre pece pech pecr peec peen peep peer pehe pehr pen- penc pene penh penn pepe per- perc pere perh pern perp perr phcc phe- phen phrr pnec pnpp ppcc ppen pper pppn pppp pprc prbc prcc prcp pre- preb prec pree pren prep prnp rbbb rbbr rcbc rccb rccc rcep rchb rcnr rebb rebe recc rece rech recp recr reeb reen reep rehb rehe rehn rene renn repe repp repr rere rhce rhcp rheb rhee rhen rnbr rncp rppn rrrr