-er c-- ccc ccd cce cch ccp ccr cdc cdd cde cdh cdp cdr ce- cec ced cee ceh cep cer ch- chc chd che chh chp chr cpc cpd cpe cph cpp cpr crc crd cre crh crp crr dcc dcd dce dcp dcr ddc ddd dde ddh ddp ddr de- dec ded dee deh dep der dh- dhc dhd dhe dhh dhp dhr dpc dpd dpe dph dpp dpr drc drd dre drp drr ec- ecc ecd ece ech ecr ed- edc edd ede edh edp edr eec eed eee eep eer ehc ehd ehe ehh ehp ehr ep- epc epd epe eph epp epr erc erd ere erh erp err hcc hcd hce hch hcp hcr hdc hdd hde hdh hdp hdr he- hec hed hee heh hep her hhc hhd hhe hhh hhp hhr hpc hpd hpe hph hpp hpr hr- hrc hrd hre hrh hrp hrr p-p pcc pcd pce pch pcp pcr pdc pdd pde pdh pdp pdr pec ped pee peh pep per phc phd phe php phr ppc ppd ppe pph ppp ppr prc prd pre prh prp prr rcc rcd rce rch rcp rcr rdc rdd rde rdh rdp rdr re- rec red ree reh rep rer rh- rhc rhd rhe rhh rhp rhr rpc rpd rpe rph rpp rpr rrc rrd rrh rrp rrr