tings itngs tnigs ntigs intgs nitgs tigns itgns tgins gtins igtns gitns tngis ntgis tgnis gtnis ngtis gntis ingts nigts ignts gints ngits gnits tinsg itnsg tnisg ntisg intsg nitsg tisng itsng tsing sting istng sitng tnsig ntsig tsnig stnig nstig sntig instg nistg isntg sintg nsitg snitg tigsn itgsn tgisn gtisn igtsn gitsn tisgn itsgn tsign stign istgn sitgn tgsin gtsin tsgin stgin gstin sgtin igstn gistn isgtn sigtn gsitn sgitn tngsi ntgsi tgnsi gtnsi ngtsi gntsi tnsgi ntsgi tsngi stngi nstgi sntgi tgsni gtsni tsgni stgni gstni sgtni ngsti gnsti nsgti sngti gsnti sgnti ingst nigst ignst ginst ngist gnist insgt nisgt isngt singt nsigt snigt igsnt gisnt isgnt signt gsint sgint ngsit gnsit nsgit sngit gsnit sgnit
Note: these 'words' (valid or invalid) are all the permutations of the word tings. These words are obtained by scrambling the letters in tings.