-er -ic -up c-- ccc cce cci ccn ccp ccr ccu ccx ce- cec cee cei cen cep cer ceu cex ci- cic cie cii cin cip cir ciu cix cn- cnc cne cni cnn cnp cnr cnu cnx cpc cpe cpi cpn cpp cpr cpu cpx crc cre cri crn crp crr cru crx cuc cue cui cun cup cur cuu cxc cxi cxp cxr cxx ec- ecc ece eci ecn ecr ecu ecx eec eee een eep eer eex eic eie eii ein eip eir eiu eix en- enc ene eni enn enp enr enu ep- epc epe epi epn epp epr epu epx erc ere eri ern erp err eru eu- euc eue eui eun eup eur eux ex- exc exe exi exp exr exu exx icc ice ici icn icp icr icu ie- iec iee iei ien iep ier iex iic iie iii iin iip iir iiu iix in- inc ine ini inn inp inr inu inx ipc ipe ipi ipn ipp ipr ipu ipx ir- irc ire iri irn irp irr iru irx iu- iuc iue iui iup iur ixc ixe ixi ixn n-i ncc nce nci ncn ncp ncr ncu ncx ne- nec nee nei nen nep ner neu nex nic nie nii nin nip nir niu nix nnc nne nni nnn nnp nnu npc npe npi npn npp npr npu nrc nre nri nrn nrp nrr nru nrx nuc nue nui nun nup nur nuu nux nxc p-p pcc pce pci pcn pcp pcr pcu pcx pec pee pei pen pep per peu pex pic pie pii pin pip pir piu pix pn- pnc pne pni pnn pnp pnr pnu pnx ppc ppe ppi ppn ppp ppr ppu ppx prc pre pri prn prp prr pru prx puc pue pui pun pup pur puu pxc pxe pxr rcc rce rci rcn rcp rcr rcu rcx re- rec ree rei ren rep rer reu rex ric rie rii rin rip rir rix rnc rni rnn rnp rnr rnu rpc rpe rpi rpn rpp rpr rpu rpx rrc rri rrn rrp rrr rru ruc rue rui run rup rur ruu rux rxp rxr ucc uce uci ucn ucp ucr ucu uec uee uei uen uep uer uic uie uii uin uip uir uiu un- unc une uni unn unp unr unu unx up- upc upe upi upn upp upr upu upx ur- urc ure uri urn urp urr uru urx uuc uue uun uur uuu uxc uxr uxu xci xcp xcr xcx xee xen xep xer xeu xex xic xie xii xin xiu xix xnc xnu xpc xpe xpn xpp xrc xrx xue xui xun xup xxi xxp xxx