trash rtash tarsh atrsh ratsh artsh trsah rtsah tsrah strah rstah srtah tasrh atsrh tsarh starh astrh satrh rasth arsth rsath srath asrth sarth trahs rtahs tarhs atrhs raths arths trhas rthas thras htras rhtas hrtas tahrs athrs thars htars ahtrs hatrs rahts arhts rhats hrats ahrts harts trsha rtsha tsrha strha rstha srtha trhsa rthsa thrsa htrsa rhtsa hrtsa tshra sthra thsra htsra shtra hstra rshta srhta rhsta hrsta shrta hsrta tashr atshr tsahr stahr asthr sathr tahsr athsr thasr htasr ahtsr hatsr tshar sthar thsar htsar shtar hstar ashtr sahtr ahstr hastr shatr hsatr rasht arsht rsaht sraht asrht sarht rahst arhst rhast hrast ahrst harst rshat srhat rhsat hrsat shrat hsrat ashrt sahrt ahsrt hasrt shart hsart
Note: these 'words' (valid or invalid) are all the permutations of the word trash. These words are obtained by scrambling the letters in trash.