reatl eratl raetl aretl eartl aertl retal ertal rteal treal etral teral ratel artel rtael trael atrel tarel eatrl aetrl etarl tearl aterl taerl realt eralt raelt arelt earlt aerlt relat erlat rleat lreat elrat lerat ralet arlet rlaet lraet alret laret ealrt aelrt elart leart alert laert retla ertla rtela trela etrla terla relta erlta rleta lreta elrta lerta rtlea trlea rltea lrtea tlrea ltrea etlra telra eltra letra tlera ltera ratle artle rtale trale atrle tarle ralte arlte rlate lrate alrte larte rtlae trlae rltae lrtae tlrae ltrae atlre talre altre latre tlare ltare eatlr aetlr etalr tealr atelr taelr ealtr aeltr elatr leatr aletr laetr etlar telar eltar letar tlear ltear atler taler alter later tlaer ltaer
Note: these 'words' (valid or invalid) are all the permutations of the word reatl. These words are obtained by scrambling the letters in reatl.