-er c-- ccc cce cch ccn cco ccr ce- cec cee ceh cen ceo cer ch- chc che chh chn cho chr cn- cnc cne cnh cnn cno cnr co- coc coe coh con coo cor crc cre crh crn cro crr ec- ecc ece ech ecn eco ecr eec eee een eeo eer ehc ehe ehh ehn eho ehr en- enc ene enh enn eno enr eo- eoc eoe eoh eon eoo eor erc ere erh ern ero err hcc hce hch hcn hco hcr he- hec hee heh hen heo her hhc hhe hhh hhn hho hhr hnc hne hnh hnn hno hoc hoe hoh hon hoo hor hr- hrc hre hrh hrn hro hrr ncc nce nch ncn nco ncr ne- nec nee neh nen neo ner nhc nhe nhh nhn nhr nnc nne nnh nnn nno no- noc noe noh non noo nor nrc nre nrn nro nrr oc- occ och ocn oco ocr oec oee oeh oen oeo oer ohc ohe ohh ohn oho ohr on- onc one onh onn ono onr oo- ooc ooh oon ooo oor or- orc ore orh orn oro orr rcc rce rch rcn rco rcr re- rec ree reh ren reo rer rh- rhc rhe rhh rhn rho rhr rnc rnh rnn rno rnr roc roe roh ron roo ror rrc rrh rrn rrr