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