-er -ic c-- ccc cce ccg cci ccn ccp ccr ccx ce- cec cee ceg cei cen cep cer cex cgc cge cgg cgi cgn cgp cgr ci- cic cie cig cii cin cip cir cix cn- cnc cne cng cni cnn cnp cnr cnx cpc cpe cpg cpi cpn cpp cpr cpx crc cre crg cri crn crp crr crx cxc cxi cxp cxr cxx ec- ecc ece ecg eci ecn ecr ecx eec eee eeg een eep eer eex egc ege egg egi egn egp egr egx eic eie eig eii ein eip eir eix en- enc ene eng eni enn enp enr ep- epc epe epg epi epn epp epr epx erc ere erg eri ern erp err ex- exc exe exi exp exr exx g-p gcc gce gcg gci gcn gcp gcr ge- gec gee geg gei gen gep ger gex ggc ggg ggi ggn ggp ggr gic gie gig gii gin gip gir gnc gne gni gnn gnp gnr gpc gpe gpg gpi gpn gpp gpr gpx grc gre grg gri grn grp grr grx gxp icc ice icg ici icn icp icr ie- iec iee ieg iei ien iep ier iex igc ige igg igi ign igp igr iic iie iii iin iip iir iix in- inc ine ing ini inn inp inr inx ipc ipe ipg ipi ipn ipp ipr ipx ir- irc ire irg iri irn irp irr irx ixc ixe ixi ixn n-i ncc nce ncg nci ncn ncp ncr ncx ne- nec nee neg nei nen nep ner nex ngc nge ngg ngi ngn ngp nic nie nig nii nin nip nir nix nnc nne nng nni nnn nnp npc npe npg npi npn npp npr nrc nre nrg nri nrn nrp nrr nrx nxc p-p pcc pce pcg pci pcn pcp pcr pcx pec pee peg pei pen pep per pex pgc pge pgg pgi pgn pgp pgr pic pie pig pii pin pip pir pix pn- pnc pne png pni pnn pnp pnr pnx ppc ppe ppg ppi ppn ppp ppr ppx prc pre prg pri prn prp prr prx pxc pxe pxg pxr rcc rce rcg rci rcn rcp rcr rcx re- rec ree reg rei ren rep rer rex rgc rge rgg rgi rgn rgp rgr rgx ric rie rig rii rin rip rir rix rnc rng rni rnn rnp rnr rpc rpe rpg rpi rpn rpp rpr rpx rrc rrg rri rrn rrp rrr rxp rxr xci xcp xcr xcx xee xeg xen xep xer xex xge xgi xgp xic xie xii xin xix xnc xpc xpe xpg xpn xpp xrc xrx xxi xxp xxx