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