-er -up c-- ccc cce ccn ccp ccr ccs ccu ce- cec cee cen cep ceq cer ces ceu cn- cnc cne cnn cnp cnr cns cnu cpc cpe cpn cpp cpq cpr cps cpu cqc cqs crc cre crn crp crq crr crs cru csc cse csn csp csq csr css csu cuc cue cun cup cuq cur cus cuu ec- ecc ece ecn ecq ecr ecs ecu eec eee een eep eer ees en- enc ene enn enp enr ens enu ep- epc epe epn epp epq epr eps epu eqe eqn eqp eqq eqs equ erc ere ern erp erq err ers eru es- esc ese esn esp esq 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 nqc nqs nrc nre nrn nrp nrr nrs nru nsc nse nsn nsp nsr nss nsu nuc nue nun nup nuq nur nus nuu p-p pcc pce pcn pcp pcq pcr pcs pcu pec pee pen pep per pes peu pn- pnc pne pnn pnp pnr pns pnu ppc ppe ppn ppp ppq ppr pps ppu pqq pqr pqs prc pre prn prp prq prr prs pru ps- psc pse psn psp psr pss psu puc pue pun pup pur pus puu qcc qcp qcs qec qee qen qep qne qns qpc qpp qpr qps qqq qqu qrc qre qrp qrs qru qsc qsp qsr qu- que qur qus rcc rce rcn rcp rcr rcs rcu re- rec ree ren rep req rer res reu rnc rnn rnp rnr rns rnu rpc rpe rpn rpp rpr rps rpu rqc rqn rqs rrc rrn rrp rrq rrr rrs rru rsc rse rsn rsp rsq rsr rss rsu ruc rue run rup rur rus ruu scc sce scn scp scr scs scu se- sec see sen sep seq ser ses seu snc sne snn snp snr sns snu spc spe spn spp spq spr sps spu sqn sqq sqr sqs sr- src sre srn srp srq srr srs ss- ssc sse ssn ssp ssq ssr sss ssu suc sue sun sup suq sur sus suu ucc uce ucn ucp ucr ucs ucu uec uee uen uep uer ues un- unc une unn unp unq 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