newts enwts nwets wnets ewnts wents netws entws ntews tnews etnws tenws nwtes wntes ntwes tnwes wtnes twnes ewtns wetns etwns tewns wtens twens newst enwst nwest wnest ewnst wenst neswt enswt nsewt snewt esnwt senwt nwset wnset nswet snwet wsnet swnet ewsnt wesnt eswnt sewnt wsent swent netsw entsw ntesw tnesw etnsw tensw nestw enstw nsetw snetw esntw sentw ntsew tnsew nstew sntew tsnew stnew etsnw tesnw estnw setnw tsenw stenw nwtse wntse ntwse tnwse wtnse twnse nwste wnste nswte snwte wsnte swnte ntswe tnswe nstwe sntwe tsnwe stnwe wtsne twsne wstne swtne tswne stwne ewtsn wetsn etwsn tewsn wtesn twesn ewstn westn eswtn sewtn wsetn swetn etswn teswn estwn setwn tsewn stewn wtsen twsen wsten swten tswen stwen
Note: these 'words' (valid or invalid) are all the permutations of the word newts. These words are obtained by scrambling the letters in newts.