airer iarer arier raier iraer riaer aierr iaerr aeirr eairr iearr eiarr areir raeir aerir earir reair erair irear riear ierar eirar reiar eriar airre iarre arire raire irare riare airre iarre arire raire irare riare arrie rarie arrie rarie rraie rraie irrae rirae irrae rirae rriae rriae aierr iaerr aeirr eairr iearr eiarr airer iarer arier raier iraer riaer aerir earir areir raeir erair reair ierar eirar irear riear eriar reiar areri raeri aerri earri reari erari arrei rarei arrei rarei rraei rraei aerri earri areri raeri erari reari rerai errai rreai rreai errai rerai irera riera ierra eirra reira erira irrea rirea irrea rirea rriea rriea ierra eirra irera riera erira reira reria erria rreia rreia erria reria
Note: these 'words' (valid or invalid) are all the permutations of the word airer. These words are obtained by scrambling the letters in airer.