canst acnst cnast ncast ancst nacst casnt acsnt csant scant ascnt sacnt cnsat ncsat csnat scnat nscat sncat ansct nasct asnct sanct nsact snact cants acnts cnats ncats ancts nacts catns actns ctans tcans atcns tacns cntas nctas ctnas tcnas ntcas tncas antcs natcs atncs tancs ntacs tnacs castn acstn csatn scatn asctn sactn catsn actsn ctasn tcasn atcsn tacsn cstan sctan ctsan tcsan stcan tscan astcn satcn atscn tascn stacn tsacn cnsta ncsta csnta scnta nscta sncta cntsa nctsa ctnsa tcnsa ntcsa tncsa cstna sctna ctsna tcsna stcna tscna nstca sntca ntsca tnsca stnca tsnca anstc nastc asntc santc nsatc snatc antsc natsc atnsc tansc ntasc tnasc astnc satnc atsnc tasnc stanc tsanc nstac sntac ntsac tnsac stnac tsnac
Note: these 'words' (valid or invalid) are all the permutations of the word canst. These words are obtained by scrambling the letters in canst.