-er -ic c-- ccc cce ccf ccg cci ccn ccp ccr ccx ce- cec cee cef ceg cei cen cep cer cex cfc cfe cff cfg cfi cfn cfp cfr cfx cgc cge cgg cgi cgn cgp cgr ci- cic cie cif cig cii cin cip cir cix cn- cnc cne cnf cng cni cnn cnp cnr cnx cpc cpe cpf cpg cpi cpn cpp cpr cpx crc cre crf crg cri crn crp crr crx cxc cxf cxi cxp cxr cxx ec- ecc ece ecf ecg eci ecn ecr ecx eec eee eef eeg een eep eer eex ef- efc efe eff efg efi efp efr efx egc ege egf egg egi egn egp egr egx eic eie eif eig eii ein eip eir eix en- enc ene enf eng eni enn enp enr ep- epc epe epf epg epi epn epp epr epx erc ere erf erg eri ern erp err ex- exc exe exi exp exr exx fcc fce fcf fcg fci fcn fcp fcr fcx fec fee fef feg fei fen fep fer fex ffc ffe fff ffg ffi ffn ffp ffr ffx fgc fge fgf fgg fgi fgn fgp fgr fic fie fif fig fii fin fip fir fix fnc fne fnf fng fni fnn fnp fnr fnx fpc fpe fpg fpi fpn fpp fpr fpx frc fre frf frg fri frn frp frr fxe fxg fxi fxp fxr fxx g-p gcc gce gcf gcg gci gcn gcp gcr ge- gec gee gef geg gei gen gep ger gex gfc gfe gff gfi gfp gfr gfx ggc ggg ggi ggn ggp ggr gic gie gif gig gii gin gip gir gnc gne gnf gni gnn gnp gnr gpc gpe gpf gpg gpi gpn gpp gpr gpx grc gre grf grg gri grn grp grr grx gxf gxp i-f icc ice icf icg ici icn icp icr ie- iec iee ief ieg iei ien iep ier iex ifc ife iff ifg ifi ifn ifp ifr ifx igc ige igf igg igi ign igp igr iic iie iif iii iin iip iir iix in- inc ine inf ing ini inn inp inr inx ipc ipe ipf ipg ipi ipn ipp ipr ipx ir- irc ire irf irg iri irn irp irr irx ixc ixe ixi ixn n-i ncc nce ncf ncg nci ncn ncp ncr ncx ne- nec nee nef neg nei nen nep ner nex nfc nfe nff nfi nfn nfp nfr ngc nge ngf ngg ngi ngn ngp nic nie nif nig nii nin nip nir nix nnc nne nnf nng nni nnn nnp npc npe npf npg npi npn npp npr nrc nre nrf nrg nri nrn nrp nrr nrx nxc p-p pcc pce pcf pcg pci pcn pcp pcr pcx pec pee pef peg pei pen pep per pex pfc pfe pff pfg pfi pfn pfp pfr pfx pgc pge pgf pgg pgi pgn pgp pgr pic pie pif pig pii pin pip pir pix pn- pnc pne pnf png pni pnn pnp pnr pnx ppc ppe ppf ppg ppi ppn ppp ppr ppx prc pre prf prg pri prn prp prr prx pxc pxe pxg pxr rcc rce rcf rcg rci rcn rcp rcr rcx re- rec ree ref reg rei ren rep rer rex rfc rfe rff rfg rfi rfn rfp rfr rgc rge rgf rgg rgi rgn rgp rgr rgx ric rie rif rig rii rin rip rir rix rnc rng rni rnn rnp rnr rpc rpe rpf rpg rpi rpn rpp rpr rpx rrc rrf rrg rri rrn rrp rrr rxp rxr xcf xci xcp xcr xcx xee xeg xen xep xer xex xfe xfn xfx xge xgi xgp xic xie xii xin xix xnc xpc xpe xpf xpg xpn xpp xrc xrf xrx xxi xxp xxx