-er -ic c-- ccc ccd cce ccg cci ccp ccr cdc cdd cde cdg cdi cdp cdr ce- cec ced cee ceg cei cep cer cgc cgd cge cgg cgi cgp cgr ci- cic cid cie cig cii cip cir cpc cpd cpe cpg cpi cpp cpr crc crd cre crg cri crp crr dcc dcd dce dcg dci dcp dcr ddc ddd dde ddg ddi ddp ddr de- dec ded dee deg dei dep der dgc dgd dge dgg dgi dgp dgr di- dic did die dig dii dip dir dpc dpd dpe dpg dpi dpp dpr drc drd dre drg dri drp drr ec- ecc ecd ece ecg eci ecr ed- edc edd ede edg edi edp edr eec eed eee eeg eep eer egc egd ege egg egi egp egr eic eid eie eig eii eip eir ep- epc epd epe epg epi epp epr erc erd ere erg eri erp err g-d g-p gcc gcd gce gcg gci gcp gcr gdc gdd gde gdi gdp gdr ge- gec ged gee geg gei gep ger ggc ggd ggg ggi ggp ggr gic gid gie gig gii gip gir gpc gpd gpe gpg gpi gpp gpr grc grd gre grg gri grp grr i-d icc icd ice icg ici icp icr idc idd ide idg idi idp idr ie- iec ied iee ieg iei iep ier igc igd ige igg igi igp igr iic iid iie iii iip iir ipc ipd ipe ipg ipi ipp ipr ir- irc ird ire irg iri irp irr p-p pcc pcd pce pcg pci pcp pcr pdc pdd pde pdg pdi pdp pdr pec ped pee peg pei pep per pgc pgd pge pgg pgi pgp pgr pic pid pie pig pii pip pir ppc ppd ppe ppg ppi ppp ppr prc prd pre prg pri prp prr rcc rcd rce rcg rci rcp rcr rdc rdd rde rdg rdi rdp rdr re- rec red ree reg rei rep rer rgc rgd rge rgg rgi rgp rgr ric rid rie rig rii rip rir rpc rpd rpe rpg rpi rpp rpr rrc rrd rrg rri rrp rrr