pecid epcid pceid cpeid ecpid cepid peicd epicd piecd ipecd eipcd iepcd pcied cpied piced ipced ciped icped ecipd ceipd eicpd iecpd ciepd icepd pecdi epcdi pcedi cpedi ecpdi cepdi pedci epdci pdeci dpeci edpci depci pcdei cpdei pdcei dpcei cdpei dcpei ecdpi cedpi edcpi decpi cdepi dcepi peidc epidc piedc ipedc eipdc iepdc pedic epdic pdeic dpeic edpic depic pidec ipdec pdiec dpiec idpec dipec eidpc iedpc edipc deipc idepc diepc pcide cpide picde ipcde cipde icpde pcdie cpdie pdcie dpcie cdpie dcpie pidce ipdce pdice dpice idpce dipce cidpe icdpe cdipe dcipe idcpe dicpe ecidp ceidp eicdp iecdp ciedp icedp ecdip cedip edcip decip cdeip dceip eidcp iedcp edicp deicp idecp diecp cidep icdep cdiep dciep idcep dicep
Note: these 'words' (valid or invalid) are all the permutations of the word pecid. These words are obtained by scrambling the letters in pecid.