-er -ic c-- ccc cce cch cci cck ccr ce- cec cee ceh cei cek cer ch- chc che chh chi chk chr ci- cic cie cih cii cik cir ckc ckh cki crc cre crh cri crk crr ec- ecc ece ech eci eck ecr eec eee eek eer ehc ehe ehh ehi ehr eic eie eii eik eir ekc eke ekh eki ekr erc ere erh eri erk err h-i hcc hce hch hci hck hcr he- hec hee heh hei hek her hhc hhe hhh hhi hhk hhr hic hie hih hii hik hir hkh hki hkk hkr hr- hrc hre hrh hri hrk hrr icc ice ich ici ick icr ie- iec iee iei iek ier ihc ihe ihh ihi ihk ihr iic iie iih iii iir ikc ike iki ikk ikr ir- irc ire iri irk irr kcc kce kch kci kck kcr ke- kec kee keh kei kek ker khe khh khi khk khr kic kie kih kii kik kir kkc kke kkh kki kkk kkr krc kri krk krr rcc rce rch rci rcr re- rec ree reh rei rek rer rh- rhc rhe rhh rhi rhr ric rie rih rii rik rir rkc rke rkk rrc rrh rri rrk rrr