tcrea ctrea trcea rtcea crtea rctea tcera ctera tecra etcra cetra ectra treca rteca terca etrca retca ertca creta rceta certa ecrta recta ercta tcrae ctrae trcae rtcae crtae rctae tcare ctare tacre atcre catre actre trace rtace tarce atrce ratce artce crate rcate carte acrte racte arcte tcear ctear tecar etcar cetar ectar tcaer ctaer tacer atcer cater acter teacr etacr taecr atecr eatcr aetcr ceatr ecatr caetr acetr eactr aectr treac rteac terac etrac retac ertac traec rtaec tarec atrec ratec artec tearc etarc taerc aterc eatrc aetrc reatc eratc raetc aretc eartc aertc creat rceat cerat ecrat recat ercat craet rcaet caret acret racet arcet ceart ecart caert acert eacrt aecrt react eract raect arect earct aerct
Note: these 'words' (valid or invalid) are all the permutations of the word tcrea. These words are obtained by scrambling the letters in tcrea.