-er c-- ccc cce cch ccr ccv ce- cec cee ceh cer cev ch- chc che chh chr chv crc cre crh crr crv cvc cve cvh cvr cvv ec- ecc ece ech ecr ecv eec eee eer eev ehc ehe ehh ehr ehv erc ere erh err erv evc eve evh evr evv hcc hce hch hcr hcv he- hec hee heh her hev hhc hhe hhh hhr hhv hr- hrc hre hrh hrr hrv hv- hvc hvr hvv rcc rce rch rcr rcv re- rec ree reh rer rev rh- rhc rhe rhh rhr rhv rrc rrh rrr rvc rve rvh rvr rvv v-e vcc vce vch vcr vec vee veh ver vh- vhc vhe vrc vre vrh vrr vvc vvr vvv