-er -ic c-- ccc ccd cce ccg cci cco ccp ccr cdc cdd cde cdg cdi cdo cdp cdr ce- cec ced cee ceg cei ceo cep cer cgc cgd cge cgg cgi cgo cgp cgr ci- cic cid cie cig cii cio cip cir co- coc cod coe cog coi coo cop cor cpc cpd cpe cpg cpi cpo cpp cpr crc crd cre crg cri cro crp crr dcc dcd dce dcg dci dco dcp dcr ddc ddd dde ddg ddi ddo ddp ddr de- dec ded dee deg dei deo dep der dgc dgd dge dgg dgi dgp dgr di- dic did die dig dii dio dip dir doc dod doe dog doi doo dop dor dpc dpd dpe dpg dpi dpo dpp dpr drc drd dre drg dri dro drp drr ec- ecc ecd ece ecg eci eco ecr ed- edc edd ede edg edi edo edp edr eec eed eee eeg eeo eep eer egc egd ege egg egi ego egp egr eic eid eie eig eii eio eip eir eo- eoc eod eoe eog eoi eoo eop eor ep- epc epd epe epg epi epo epp epr erc erd ere erg eri ero erp err g-d g-p gcc gcd gce gcg gci gco gcp gcr gdc gdd gde gdi gdo gdp gdr ge- gec ged gee geg gei geo gep ger ggc ggd ggg ggi ggo ggp ggr gic gid gie gig gii gio gip gir goc god goe gog goi goo gop gor gpc gpd gpe gpg gpi gpo gpp gpr grc grd gre grg gri gro grp grr i-d icc icd ice icg ici ico icp icr idc idd ide idg idi ido idp idr ie- iec ied iee ieg iei iep ier igc igd ige igg igi igo igp igr iic iid iie iii iio iip iir io- ioc iod ioe iog ioi ioo iop ior ipc ipd ipe ipg ipi ipo ipp ipr ir- irc ird ire irg iri iro irp irr o-i oc- occ ocd ocg oci oco ocp ocr odc odd ode odg odi odo odp odr oec oed oee oeg oei oeo oep oer ogc ogd oge ogg ogi ogo ogp oic oid oie oii oio oip oir oo- ooc ood oog ooi ooo oop oor op- opc opd ope opg opi opo opp opr or- orc ord ore org ori oro orp orr p-p pcc pcd pce pcg pci pco pcp pcr pdc pdd pde pdg pdi pdo pdp pdr pec ped pee peg pei peo pep per pgc pgd pge pgg pgi pgo pgp pgr pic pid pie pig pii pio pip pir poc pod poe pog poi poo pop por ppc ppd ppe ppg ppi ppo ppp ppr prc prd pre prg pri pro prp prr rcc rcd rce rcg rci rco rcp rcr rdc rdd rde rdg rdi rdo rdp rdr re- rec red ree reg rei reo rep rer rgc rgd rge rgg rgi rgo rgp rgr ric rid rie rig rii rio rip rir roc rod roe rog roi roo rop ror rpc rpd rpe rpg rpi rpo rpp rpr rrc rrd rrg rri rrp rrr