-er c-- ccc cce ccf cch cck ccr ce- cec cee cef ceh cek cer cfc cfe cff cfh cfk cfr ch- chc che chf chh chk chr ckc ckh crc cre crf crh crk crr ec- ecc ece ecf ech eck ecr eec eee eef eek eer ef- efc efe eff efh efr ehc ehe ehf ehh ehr ekc eke ekf ekh ekr erc ere erf erh erk err fcc fce fcf fck fcr fec fee fef feh fek fer ffc ffe fff ffh ffk ffr fhc fhe fhf fhh fhr fkc fkf fkk frc fre frf frh frk frr hcc hce hcf hch hck hcr he- hec hee hef heh hek her hfc hfe hff hfh hfk hfr hhc hhe hhf hhh hhk hhr hkf hkh hkk hkr hr- hrc hre hrf hrh hrk hrr kcc kce kch kck kcr ke- kec kee kef keh kek ker kfc kff kfh khe khf khh khk khr kkc kke kkh kkk kkr krc krf krk krr rcc rce rcf rch rcr re- rec ree ref reh rek rer rfc rfe rff rfh rfk rfr rh- rhc rhe rhf rhh rhr rkc rke rkf rkk rrc rrf rrh rrk rrr