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