-er -ic c-- ccc ccd cce ccf cci ccp ccr ccs cdc cdd cde cdf cdi cdp cdr cds ce- cec ced cee cef cei cep cer ces cfc cfd cfe cff cfi cfp cfr cfs ci- cic cid cie cif cii cip cir cis cpc cpd cpe cpf cpi cpp cpr cps crc crd cre crf cri crp crr crs csc csd cse csf csi csp csr css dcc dcd dce dcf dci dcp dcr dcs ddc ddd dde ddf ddi ddp ddr dds de- dec ded dee def dei dep der des dfc dfd dfe dff dfi dfp dfr dfs di- dic did die dif dii dip dir dis dpc dpd dpe dpf dpi dpp dpr dps drc drd dre dri drp drr drs dsc dsd dse dsf dsi dsp dsr dss ec- ecc ecd ece ecf eci ecr ecs ed- edc edd ede edf edi edp edr eds eec eed eee eef eep eer ees ef- efc efd efe eff efi efp efr efs eic eid eie eif eii eip eir eis ep- epc epd epe epf epi epp epr eps erc erd ere erf eri erp err ers es- esc esd ese esf esi esp esr ess fcc fcd fce fcf fci fcp fcr fcs fdc fdd fde fdf fdi fdp fdr fds fec fed fee fef fei fep fer fes ffc ffd ffe fff ffi ffp ffr ffs fic fid fie fif fii fip fir fis fpc fpd fpe fpi fpp fpr fps frc frd fre frf fri frp frr frs fsc fsd fse fsf fsi fsp fsr fss i-d i-f icc icd ice icf ici icp icr ics idc idd ide idf idi idp idr ids ie- iec ied iee ief iei iep ier ies ifc ifd ife iff ifi ifp ifr ifs iic iid iie iif iii iip iir iis ipc ipd ipe ipf ipi ipp ipr ips ir- irc ird ire irf iri irp irr irs is- isc isd ise isf isi isp isr iss p-p pcc pcd pce pcf pci pcp pcr pcs pdc pdd pde pdf pdi pdp pdr pds pec ped pee pef pei pep per pes pfc pfd pfe pff pfi pfp pfr pfs pic pid pie pif pii pip pir pis ppc ppd ppe ppf ppi ppp ppr pps prc prd pre prf pri prp prr prs ps- psc psd pse psf psi psp psr pss rcc rcd rce rcf rci rcp rcr rcs rdc rdd rde rdf rdi rdp rdr rds re- rec red ree ref rei rep rer res rfc rfd rfe rff rfi rfp rfr rfs ric rid rie rif rii rip rir ris rpc rpd rpe rpf rpi rpp rpr rps rrc rrd rrf rri rrp rrr rrs rsc rsd rse rsf rsi rsp rsr rss scc scd sce scf sci scp scr scs sdc sdd sde sdf sdi sdp sdr sds se- sec sed see sef sei sep ser ses sfc sfd sfe sff sfi sfp sfr sfs sic sid sie sif sii sip sir sis spc spd spe spf spi spp spr sps sr- src srd sre srf sri srp srr srs ss- ssc ssd sse ssf ssi ssp ssr sss