-er -up c-- ccc cce ccn ccp ccr ccs ccu ce- cec cee cen cep cer ces ceu cn- cnc cne cnn cnp cnr cns cnu cpc cpe cpn cpp cpr cps cpu crc cre crn crp crr crs cru csc cse csn csp csr css csu cuc cue cun cup cur cus cuu ec- ecc ece ecn ecr ecs ecu eec eee een eep eer ees en- enc ene enn enp enr ens enu ep- epc epe epn epp epr eps epu erc ere ern erp err ers eru es- esc ese esn esp esr ess esu eu- euc eue eun eup eur eus ncc nce ncn ncp ncr ncs ncu ne- nec nee nen nep ner nes neu nnc nne nnn nnp nns nnu npc npe npn npp npr nps npu nrc nre nrn nrp nrr nrs nru nsc nse nsn nsp nsr nss nsu nuc nue nun nup nur nus nuu p-p pcc pce pcn pcp pcr pcs pcu pec pee pen pep per pes peu pn- pnc pne pnn pnp pnr pns pnu ppc ppe ppn ppp ppr pps ppu prc pre prn prp prr prs pru ps- psc pse psn psp psr pss psu puc pue pun pup pur pus puu rcc rce rcn rcp rcr rcs rcu re- rec ree ren rep rer res reu rnc rnn rnp rnr rns rnu rpc rpe rpn rpp rpr rps rpu rrc rrn rrp rrr rrs rru rsc rse rsn rsp rsr rss rsu ruc rue run rup rur rus ruu scc sce scn scp scr scs scu se- sec see sen sep ser ses seu snc sne snn snp snr sns snu spc spe spn spp spr sps spu sr- src sre srn srp srr srs ss- ssc sse ssn ssp ssr sss ssu suc sue sun sup sur sus suu ucc uce ucn ucp ucr ucs ucu uec uee uen uep uer ues un- unc une unn unp unr uns unu up- upc upe upn upp upr ups upu ur- urc ure urn urp urr urs uru usc use usn usp usr uss usu uuc uue uun uur uus uuu