wefts ewfts wfets fwets efwts fewts wetfs ewtfs wtefs twefs etwfs tewfs wftes fwtes wtfes twfes ftwes tfwes eftws fetws etfws tefws ftews tfews wefst ewfst wfest fwest efwst fewst wesft ewsft wseft sweft eswft sewft wfset fwset wsfet swfet fswet sfwet efswt feswt esfwt sefwt fsewt sfewt wetsf ewtsf wtesf twesf etwsf tewsf westf ewstf wsetf swetf eswtf sewtf wtsef twsef wstef swtef tswef stwef etswf teswf estwf setwf tsewf stewf wftse fwtse wtfse twfse ftwse tfwse wfste fwste wsfte swfte fswte sfwte wtsfe twsfe wstfe swtfe tswfe stwfe ftswe tfswe fstwe sftwe tsfwe stfwe eftsw fetsw etfsw tefsw ftesw tfesw efstw festw esftw seftw fsetw sfetw etsfw tesfw estfw setfw tsefw stefw ftsew tfsew fstew sftew tsfew stfew
Note: these 'words' (valid or invalid) are all the permutations of the word wefts. These words are obtained by scrambling the letters in wefts.