-er -ic c-- ccc ccd cce ccg cci ccp ccr ccs cdc cdd cde cdg cdi cdp cdr cds ce- cec ced cee ceg cei cep cer ces cgc cgd cge cgg cgi cgp cgr cgs ci- cic cid cie cig cii cip cir cis cpc cpd cpe cpg cpi cpp cpr cps crc crd cre crg cri crp crr crs csc csd cse csg csi csp csr css dcc dcd dce dcg dci dcp dcr dcs ddc ddd dde ddg ddi ddp ddr dds de- dec ded dee deg dei dep der des dgc dgd dge dgg dgi dgp dgr dgs di- dic did die dig dii dip dir dis dpc dpd dpe dpg dpi dpp dpr dps drc drd dre drg dri drp drr drs dsc dsd dse dsg dsi dsp dsr dss ec- ecc ecd ece ecg eci ecr ecs ed- edc edd ede edg edi edp edr eds eec eed eee eeg eep eer ees egc egd ege egg egi egp egr egs eic eid eie eig eii eip eir eis ep- epc epd epe epg epi epp epr eps erc erd ere erg eri erp err ers es- esc esd ese esg esi esp esr ess g-d g-p gcc gcd gce gcg gci gcp gcr gcs gdc gdd gde gdi gdp gdr gds ge- gec ged gee geg gei gep ger ges ggc ggd ggg ggi ggp ggr ggs gic gid gie gig gii gip gir gis gpc gpd gpe gpg gpi gpp gpr gps grc grd gre grg gri grp grr grs gsc gsd gse gsg gsi gsp gsr gss i-d icc icd ice icg ici icp icr ics idc idd ide idg idi idp idr ids ie- iec ied iee ieg iei iep ier ies igc igd ige igg igi igp igr igs iic iid iie iii iip iir iis ipc ipd ipe ipg ipi ipp ipr ips ir- irc ird ire irg iri irp irr irs is- isc isd ise isg isi isp isr iss p-p pcc pcd pce pcg pci pcp pcr pcs pdc pdd pde pdg pdi pdp pdr pds pec ped pee peg pei pep per pes pgc pgd pge pgg pgi pgp pgr pgs pic pid pie pig pii pip pir pis ppc ppd ppe ppg ppi ppp ppr pps prc prd pre prg pri prp prr prs ps- psc psd pse psg psi psp psr pss rcc rcd rce rcg rci rcp rcr rcs rdc rdd rde rdg rdi rdp rdr rds re- rec red ree reg rei rep rer res rgc rgd rge rgg rgi rgp rgr rgs ric rid rie rig rii rip rir ris rpc rpd rpe rpg rpi rpp rpr rps rrc rrd rrg rri rrp rrr rrs rsc rsd rse rsg rsi rsp rsr rss scc scd sce scg sci scp scr scs sdc sdd sde sdg sdi sdp sdr sds se- sec sed see seg sei sep ser ses sgc sgd sge sgg sgi sgp sgr sgs sic sid sie sig sii sip sir sis spc spd spe spg spi spp spr sps sr- src srd sre srg sri srp srr srs ss- ssc ssd sse ssg ssi ssp ssr sss