-ene c-cd cccc cccf cccp ccdc ccdf ccdn ccdp ccdr cced ccee ccfc ccfd ccff ccnc ccne ccnf ccnp ccnr ccpe ccpn ccpp ccpr ccrc ccre ccrf ccrp cd-e cd-r cddr cdec cdef cder cdfe cdnc cdnf cdre cec- cece cecp cedd cede ceec cef- cefc cefn cen- cend cene cepc cepe cepp cepr cer- cerc cerd cere cerf cern cerp cfcf cfcn cfdp cffr cfnr cfpr cfre cfrn cfrp cncp cndd cndp cnep cnrc cnrr cpce cpep cper cpff cppd cpre crcc crce crcr crdc cre- crec cred cree cren crep crfc crne crpc dccc dccp dcfc dddd ddrc ddre dec- decc decd dece dedd dede deed deef deen deep deer defe deff defn dene denn depc depe depp depr der- derc dere derf dern derp derr dfcc dfer dfrf dnce dner dnrc dpcp dper dppc dred dree dref dren drfc eccc ecce ecdc ecdf eced ecef ecfc ecfr ecne ecpd ecpp ecrc ecrf ecrr eddc edde eddp ede- eden eder edrn eede eeee eefe eefn eend eerc efen ence end- ende ened enee ener enfp ennc enne enp- epcc epec epee epen eper epfc eppc eppp eprp ercc erce ercp erde erdf erec ered eren erer erfc erne erpe errc erre fccf fccp fece fede fedn feed feen feer fefc fefe feff fend fene fenn fepc ferc ferd fere fern ferr ffcc ffee ffff ffrr fndd fndn fndr fp-c fpcc fprf frcc frcn frcp fred free fren frep frfc frpd nccc nccf nccn nccp nccr ncdc ncdn ncdr ncec nced ncee ncef ncen ncep ncer ncfc ncfe ncnc ncnd ncpc ncrc ncre ncrp ndcc ndcp ndde nder ndnp ndpd ndpr ndrc ndre ndrf necc nece necr nedc nedd nede need neef neen neep neer nefd nefe neff nend nene nepc nepe nepr nerc nerd nere nerf nerr nfdc nfer nfff nnnn nnpr npcc nppc nppd nrdc nren nrfc nrpc nrpn nrrc nrrd pccc pcce pcep pcer pcfc pcpn pcpp pcrc pcrd pcre pcrf pdcp pdpn pdpr pdrc pece pecr ped- pede pedf peec peed peen peep peer pefc peff pen- penc pend pene penn pepd pepe per- perc perd pere perf pern perp perr pfce pfff pffr pnec pnpp ppcc ppcd ppen pper pppd pppn pppp pprc pprf prcc prcd prcf prcp pre- prec pred pree pref pren prep prfc prnd prnp prpd prrd rccc rcdc rcde rcep rcfc rcnr rcpd rcrd rder rdpc recc recd rece recp recr redc redd rede redr reed reef reen reep refd refe reff refn refr rend rene renn repe repp repr rerd rere rfef rffc rncp rndc rndf rndp rpdp rpfc rppn rred rrfc rrrr