coper ocper cpoer pcoer opcer pocer coepr ocepr ceopr ecopr oecpr eocpr cpeor pceor cepor ecpor pecor epcor opecr poecr oepcr eopcr peocr epocr copre ocpre cpore pcore opcre pocre corpe ocrpe crope rcope orcpe rocpe cproe pcroe crpoe rcpoe prcoe rpcoe oprce porce orpce ropce proce rpoce coerp ocerp ceorp ecorp oecrp eocrp corep ocrep croep rcoep orcep rocep cerop ecrop creop rceop ercop recop oercp eorcp orecp roecp erocp reocp cpero pcero cepro ecpro pecro epcro cpreo pcreo crpeo rcpeo prceo rpceo cerpo ecrpo crepo rcepo ercpo recpo perco eprco preco rpeco erpco repco operc poerc oeprc eoprc peorc eporc oprec porec orpec ropec proec rpoec oerpc eorpc orepc roepc eropc reopc peroc eproc preoc rpeoc erpoc repoc
Note: these 'words' (valid or invalid) are all the permutations of the word coper. These words are obtained by scrambling the letters in coper.