-er c-- ccc cce cch ccp ccr ce- cec cee ceh cep cer ch- chc che chh chp chr cpc cpe cph cpp cpr crc cre crh crp crr ec- ecc ece ech ecr eec eee eep eer ehc ehe ehh ehp ehr ep- epc epe eph epp epr erc ere erh erp err hcc hce hch hcp hcr he- hec hee heh hep her hhc hhe hhh hhp hhr hpc hpe hph hpp hpr hr- hrc hre hrh hrp hrr p-p pcc pce pch pcp pcr pec pee peh pep per phc phe php phr ppc ppe pph ppp ppr prc pre prh prp prr rcc rce rch rcp rcr re- rec ree reh rep rer rh- rhc rhe rhh rhp rhr rpc rpe rph rpp rpr rrc rrh rrp rrr