ctart tcart catrt actrt tacrt atcrt ctrat tcrat crtat rctat trcat rtcat cartt acrtt cratt rcatt arctt ractt tarct atrct tract rtact artct ratct ctatr tcatr cattr acttr tactr atctr cttar tctar cttar tctar ttcar ttcar cattr acttr ctatr tcatr atctr tactr tatcr attcr ttacr ttacr attcr tatcr ctrta tcrta crtta rctta trcta rtcta cttra tctra cttra tctra ttcra ttcra crtta rctta ctrta tcrta rtcta trcta trtca rttca ttrca ttrca rttca trtca cartt acrtt cratt rcatt arctt ractt catrt actrt ctart tcart atcrt tacrt crtat rctat ctrat tcrat rtcat trcat artct ratct atrct tarct rtact tract tartc atrtc tratc rtatc arttc rattc tatrc attrc ttarc ttarc attrc tatrc trtac rttac ttrac ttrac rttac trtac arttc rattc atrtc tartc rtatc tratc
Note: these 'words' (valid or invalid) are all the permutations of the word ctart. These words are obtained by scrambling the letters in ctart.