trema rtema terma etrma retma ertma trmea rtmea tmrea mtrea rmtea mrtea temra etmra tmera mtera emtra metra remta ermta rmeta mreta emrta merta tream rteam teram etram retam ertam traem rtaem tarem atrem ratem artem tearm etarm taerm aterm eatrm aetrm reatm eratm raetm aretm eartm aertm trmae rtmae tmrae mtrae rmtae mrtae trame rtame tarme atrme ratme artme tmare mtare tamre atmre matre amtre rmate mrate ramte armte marte amrte temar etmar tmear mtear emtar metar teamr etamr taemr atemr eatmr aetmr tmaer mtaer tamer atmer mater amter ematr meatr eamtr aemtr maetr ametr remat ermat rmeat mreat emrat merat reamt eramt raemt aremt earmt aermt rmaet mraet ramet armet maret amret emart meart eamrt aemrt maert amert
Note: these 'words' (valid or invalid) are all the permutations of the word trema. These words are obtained by scrambling the letters in trema.