-er c-- ccc cce cch cck ccr ce- cec cee ceh cek cer ch- chc che chh chk chr ckc ckh crc cre crh crk crr ec- ecc ece ech eck ecr eec eee eek eer ehc ehe ehh ehr ekc eke ekh ekr erc ere erh erk err hcc hce hch hck hcr he- hec hee heh hek her hhc hhe hhh hhk hhr hkh hkk hkr hr- hrc hre hrh hrk hrr kcc kce kch kck kcr ke- kec kee keh kek ker khe khh khk khr kkc kke kkh kkk kkr krc krk krr rcc rce rch rcr re- rec ree reh rek rer rh- rhc rhe rhh rhr rkc rke rkk rrc rrh rrk rrr