-er c-- ccc ccd cce cch cco ccp ccr cdc cdd cde cdh cdo cdp cdr ce- cec ced cee ceh ceo cep cer ch- chc chd che chh cho chp chr co- coc cod coe coh coo cop cor cpc cpd cpe cph cpo cpp cpr crc crd cre crh cro crp crr dcc dcd dce dco dcp dcr ddc ddd dde ddh ddo ddp ddr de- dec ded dee deh deo dep der dh- dhc dhd dhe dhh dho dhp dhr doc dod doe doh doo dop dor dpc dpd dpe dph dpo dpp dpr drc drd dre dro drp drr ec- ecc ecd ece ech eco ecr ed- edc edd ede edh edo edp edr eec eed eee eeo eep eer ehc ehd ehe ehh eho ehp ehr eo- eoc eod eoe eoh eoo eop eor ep- epc epd epe eph epo epp epr erc erd ere erh ero erp err hcc hcd hce hch hco hcp hcr hdc hdd hde hdh hdo hdp hdr he- hec hed hee heh heo hep her hhc hhd hhe hhh hho hhp hhr hoc hod hoe hoh hoo hop hor hpc hpd hpe hph hpo hpp hpr hr- hrc hrd hre hrh hro hrp hrr oc- occ ocd och oco ocp ocr odc odd ode odh odo odp odr oec oed oee oeh oeo oep oer ohc ohd ohe ohh oho ohp ohr oo- ooc ood ooh ooo oop oor op- opc opd ope oph opo opp opr or- orc ord ore orh oro orp orr p-p pcc pcd pce pch pco pcp pcr pdc pdd pde pdh pdo pdp pdr pec ped pee peh peo pep per phc phd phe pho php phr poc pod poe poh poo pop por ppc ppd ppe pph ppo ppp ppr prc prd pre prh pro prp prr rcc rcd rce rch rco rcp rcr rdc rdd rde rdh rdo rdp rdr re- rec red ree reh reo rep rer rh- rhc rhd rhe rhh rho rhp rhr roc rod roe roh roo rop ror rpc rpd rpe rph rpo rpp rpr rrc rrd rrh rrp rrr