citop ictop ctiop tciop itcop ticop ciotp icotp coitp ocitp ioctp oictp ctoip tcoip cotip octip tocip otcip itocp tiocp iotcp oitcp toicp oticp citpo ictpo ctipo tcipo itcpo ticpo cipto icpto cpito pcito ipcto picto ctpio tcpio cptio pctio tpcio ptcio itpco tipco iptco pitco tpico ptico ciopt icopt coipt ocipt iocpt oicpt cipot icpot cpiot pciot ipcot picot copit ocpit cpoit pcoit opcit pocit iopct oipct ipoct pioct opict poict ctopi tcopi cotpi octpi tocpi otcpi ctpoi tcpoi cptoi pctoi tpcoi ptcoi copti ocpti cpoti pcoti opcti pocti topci otpci tpoci ptoci optci potci itopc tiopc iotpc oitpc toipc otipc itpoc tipoc iptoc pitoc tpioc ptioc ioptc oiptc ipotc piotc opitc poitc topic otpic tpoic ptoic optic potic
Note: these 'words' (valid or invalid) are all the permutations of the word citop. These words are obtained by scrambling the letters in citop.