-er c-- ccc cce cch cck ccn cco ccr ce- cec cee ceh cek cen ceo cer ch- chc che chh chk chn cho chr ckc ckh cko cn- cnc cne cnh cnn cno cnr co- coc coe coh cok con coo cor crc cre crh crk crn cro crr ec- ecc ece ech eck ecn eco ecr eec eee eek een eeo eer ehc ehe ehh ehn eho ehr ekc eke ekh eko ekr en- enc ene enh enk enn eno enr eo- eoc eoe eoh eok eon eoo eor erc ere erh erk ern ero err hcc hce hch hck hcn hco hcr he- hec hee heh hek hen heo her hhc hhe hhh hhk hhn hho hhr hkh hkk hkn hko hkr hnc hne hnh hnk hnn hno hoc hoe hoh hok hon hoo hor hr- hrc hre hrh hrk hrn hro hrr kcc kce kch kck kcn kcr ke- kec kee keh kek ken keo ker khe khh khk khn kho khr kkc kke kkh kkk kkn kkr kn- knc kne knk knn kno knr koc koe koh kok kon koo kor krc krk krn kro krr ncc nce nch nck ncn nco ncr ne- nec nee neh nek nen neo ner nhc nhe nhh nhk nhn nhr nkc nke nkk nkn nko nkr nnc nne nnh nnk nnn nno no- noc noe noh nok non noo nor nrc nre nrk nrn nro nrr oc- occ och ock ocn oco ocr oec oee oeh oen oeo oer ohc ohe ohh ohn oho ohr okc oke okk oko okr on- onc one onh onk onn ono onr oo- ooc ooh ook oon ooo oor or- orc ore orh ork orn oro orr rcc rce rch rcn rco rcr re- rec ree reh rek ren reo rer rh- rhc rhe rhh rhn rho rhr rkc rke rkk rko rnc rnh rnn rno rnr roc roe roh rok ron roo ror rrc rrh rrk rrn rrr