-er -up c-- ccc cce ccn ccp ccr ccs ccu ccx ce- cec cee cen cep cer ces ceu cex cn- cnc cne cnn cnp cnr cns cnu cnx cpc cpe cpn cpp cpr cps cpu cpx crc cre crn crp crr crs cru crx csc cse csn csp csr css csu csx cuc cue cun cup cur cus cuu cxc cxp cxr cxs cxx ec- ecc ece ecn ecr ecs ecu ecx eec eee een eep eer ees eex en- enc ene enn enp enr ens enu ep- epc epe epn epp epr eps epu epx erc ere ern erp err ers eru es- esc ese esn esp esr ess esu esx eu- euc eue eun eup eur eus eux ex- exc exe exp exr exs exu exx ncc nce ncn ncp ncr ncs ncu ncx ne- nec nee nen nep ner nes neu nex nnc nne nnn nnp nns nnu npc npe npn npp npr nps npu nrc nre nrn nrp nrr nrs nru nrx nsc nse nsn nsp nsr nss nsu nsx nuc nue nun nup nur nus nuu nux nxc p-p pcc pce pcn pcp pcr pcs pcu pcx pec pee pen pep per pes peu pex pn- pnc pne pnn pnp pnr pns pnu pnx ppc ppe ppn ppp ppr pps ppu ppx prc pre prn prp prr prs pru prx ps- psc pse psn psp psr pss psu psx puc pue pun pup pur pus puu pxc pxe pxr pxs rcc rce rcn rcp rcr rcs rcu rcx re- rec ree ren rep rer res reu rex rnc rnn rnp rnr rns rnu rpc rpe rpn rpp rpr rps rpu rpx rrc rrn rrp rrr rrs rru rsc rse rsn rsp rsr rss rsu rsx ruc rue run rup rur rus ruu rux rxp rxr rxs scc sce scn scp scr scs scu scx se- sec see sen sep ser ses seu sex snc sne snn snp snr sns snu spc spe spn spp spr sps spu spx sr- src sre srn srp srr srs srx ss- ssc sse ssn ssp ssr sss ssu ssx suc sue sun sup sur sus suu sux sxc sxn sxs sxu ucc uce ucn ucp ucr ucs ucu uec uee uen uep uer ues un- unc une unn unp unr uns unu unx up- upc upe upn upp upr ups upu upx ur- urc ure urn urp urr urs uru urx usc use usn usp usr uss usu usx uuc uue uun uur uus uuu uxc uxr uxu xcp xcr xcx xee xen xep xer xes xeu xex xnc xns xnu xpc xpe xpn xpp xps xrc xrx xsc xsp xss xue xun xup xus xxp xxx