tcdpi ctdpi tdcpi dtcpi cdtpi dctpi tcpdi ctpdi tpcdi ptcdi cptdi pctdi tdpci dtpci tpdci ptdci dptci pdtci cdpti dcpti cpdti pcdti dpcti pdcti tcdip ctdip tdcip dtcip cdtip dctip tcidp ctidp ticdp itcdp citdp ictdp tdicp dticp tidcp itdcp ditcp idtcp cditp dcitp cidtp icdtp dictp idctp tcpid ctpid tpcid ptcid cptid pctid tcipd ctipd ticpd itcpd citpd ictpd tpicd pticd tipcd itpcd pitcd iptcd cpitd pcitd ciptd icptd pictd ipctd tdpic dtpic tpdic ptdic dptic pdtic tdipc dtipc tidpc itdpc ditpc idtpc tpidc ptidc tipdc itpdc pitdc iptdc dpitc pditc diptc idptc pidtc ipdtc cdpit dcpit cpdit pcdit dpcit pdcit cdipt dcipt cidpt icdpt dicpt idcpt cpidt pcidt cipdt icpdt picdt ipcdt dpict pdict dipct idpct pidct ipdct
Note: these 'words' (valid or invalid) are all the permutations of the word tcdpi. These words are obtained by scrambling the letters in tcdpi.