drift rdift dirft idrft ridft irdft drfit rdfit dfrit fdrit rfdit frdit difrt idfrt dfirt fdirt ifdrt fidrt rifdt irfdt rfidt fridt ifrdt firdt dritf rditf dirtf idrtf ridtf irdtf drtif rdtif dtrif tdrif rtdif trdif ditrf idtrf dtirf tdirf itdrf tidrf ritdf irtdf rtidf tridf itrdf tirdf drfti rdfti dfrti fdrti rfdti frdti drtfi rdtfi dtrfi tdrfi rtdfi trdfi dftri fdtri dtfri tdfri ftdri tfdri rftdi frtdi rtfdi trfdi ftrdi tfrdi diftr idftr dfitr fditr ifdtr fidtr ditfr idtfr dtifr tdifr itdfr tidfr dftir fdtir dtfir tdfir ftdir tfdir iftdr fitdr itfdr tifdr ftidr tfidr riftd irftd rfitd fritd ifrtd firtd ritfd irtfd rtifd trifd itrfd tirfd rftid frtid rtfid trfid ftrid tfrid iftrd fitrd itfrd tifrd ftird tfird
Note: these 'words' (valid or invalid) are all the permutations of the word drift. These words are obtained by scrambling the letters in drift.