-er -ic c-- ccc ccd cce ccf cci ccn ccp ccr ccs cdc cdd cde cdf cdi cdn cdp cdr cds ce- cec ced cee cef cei cen cep cer ces cfc cfd cfe cff cfi cfn cfp cfr cfs ci- cic cid cie cif cii cin cip cir cis cn- cnc cnd cne cnf cni cnn cnp cnr cns cpc cpd cpe cpf cpi cpn cpp cpr cps crc crd cre crf cri crn crp crr crs csc csd cse csf csi csn csp csr css dcc dcd dce dcf dci dcn dcp dcr dcs ddc ddd dde ddf ddi ddn ddp ddr dds de- dec ded dee def dei den dep der des dfc dfd dfe dff dfi dfn dfp dfr dfs di- dic did die dif dii din dip dir dis dnc dnd dne dnf dni dnn dnp dnr dns dpc dpd dpe dpf dpi dpn dpp dpr dps drc drd dre dri drn drp drr drs dsc dsd dse dsf dsi dsn dsp dsr dss ec- ecc ecd ece ecf eci ecn ecr ecs ed- edc edd ede edf edi edn edp edr eds eec eed eee eef een eep eer ees ef- efc efd efe eff efi efp efr efs eic eid eie eif eii ein eip eir eis en- enc end ene enf eni enn enp enr ens ep- epc epd epe epf epi epn epp epr eps erc erd ere erf eri ern erp err ers es- esc esd ese esf esi esn esp esr ess fcc fcd fce fcf fci fcn fcp fcr fcs fdc fdd fde fdf fdi fdn fdp fdr fds fec fed fee fef fei fen fep fer fes ffc ffd ffe fff ffi ffn ffp ffr ffs fic fid fie fif fii fin fip fir fis fnc fnd fne fnf fni fnn fnp fnr fns fpc fpd fpe fpi fpn fpp fpr fps frc frd fre frf fri frn frp frr frs fsc fsd fse fsf fsi fsn fsp fsr fss i-d i-f icc icd ice icf ici icn icp icr ics idc idd ide idf idi idn idp idr ids ie- iec ied iee ief iei ien iep ier ies ifc ifd ife iff ifi ifn ifp ifr ifs iic iid iie iif iii iin iip iir iis in- inc ind ine inf ini inn inp inr ins ipc ipd ipe ipf ipi ipn ipp ipr ips ir- irc ird ire irf iri irn irp irr irs is- isc isd ise isf isi isn isp isr iss n-i ncc ncd nce ncf nci ncn ncp ncr ncs ndc ndd nde ndf ndi ndn ndp ndr nds ne- nec ned nee nef nei nen nep ner nes nfc nfd nfe nff nfi nfn nfp nfr nfs nic nid nie nif nii nin nip nir nis nnc nne nnf nni nnn nnp nns npc npd npe npf npi npn npp npr nps nrc nrd nre nrf nri nrn nrp nrr nrs nsc nsd nse nsf nsi nsn nsp nsr nss p-p pcc pcd pce pcf pci pcn pcp pcr pcs pdc pdd pde pdf pdi pdn pdp pdr pds pec ped pee pef pei pen pep per pes pfc pfd pfe pff pfi pfn pfp pfr pfs pic pid pie pif pii pin pip pir pis pn- pnc pnd pne pnf pni pnn pnp pnr pns ppc ppd ppe ppf ppi ppn ppp ppr pps prc prd pre prf pri prn prp prr prs ps- psc psd pse psf psi psn psp psr pss rcc rcd rce rcf rci rcn rcp rcr rcs rdc rdd rde rdf rdi rdn rdp rdr rds re- rec red ree ref rei ren rep rer res rfc rfd rfe rff rfi rfn rfp rfr rfs ric rid rie rif rii rin rip rir ris rnc rnd rni rnn rnp rnr rns rpc rpd rpe rpf rpi rpn rpp rpr rps rrc rrd rrf rri rrn rrp rrr rrs rsc rsd rse rsf rsi rsn rsp rsr rss scc scd sce scf sci scn scp scr scs sdc sdd sde sdf sdi sdn sdp sdr sds se- sec sed see sef sei sen sep ser ses sfc sfd sfe sff sfi sfn sfp sfr sfs sic sid sie sif sii sin sip sir sis snc snd sne snf sni snn snp snr sns spc spd spe spf spi spn spp spr sps sr- src srd sre srf sri srn srp srr srs ss- ssc ssd sse ssf ssi ssn ssp ssr sss