steal tseal setal estal tesal etsal stael tsael satel astel tasel atsel seatl esatl saetl asetl eastl aestl teasl etasl taesl atesl eatsl aetsl stela tsela setla estla tesla etsla stlea tslea sltea lstea tlsea ltsea selta eslta sleta lseta elsta lesta telsa etlsa tlesa ltesa eltsa letsa stale tsale satle astle tasle atsle stlae tslae sltae lstae tlsae ltsae salte aslte slate lsate alste laste talse atlse tlase ltase altse latse sealt esalt saelt aselt easlt aeslt selat eslat sleat lseat elsat lesat salet aslet slaet lsaet alset laset ealst aelst elast least alest laest teals etals taels atels eatls aetls telas etlas tleas lteas eltas letas tales atles tlaes ltaes altes lates ealts aelts elats leats alets laets
Note: these 'words' (valid or invalid) are all the permutations of the word steal. These words are obtained by scrambling the letters in steal.