rownd orwnd rwond wrond owrnd wornd ronwd ornwd rnowd nrowd onrwd norwd rwnod wrnod rnwod nrwod wnrod nwrod ownrd wonrd onwrd nowrd wnord nword rowdn orwdn rwodn wrodn owrdn wordn rodwn ordwn rdown drown odrwn dorwn rwdon wrdon rdwon drwon wdron dwron owdrn wodrn odwrn dowrn wdorn dworn rondw orndw rnodw nrodw onrdw nordw rodnw ordnw rdonw dronw odrnw dornw rndow nrdow rdnow drnow ndrow dnrow ondrw nodrw odnrw donrw ndorw dnorw rwndo wrndo rnwdo nrwdo wnrdo nwrdo rwdno wrdno rdwno drwno wdrno dwrno rndwo nrdwo rdnwo drnwo ndrwo dnrwo wndro nwdro wdnro dwnro ndwro dnwro owndr wondr onwdr nowdr wnodr nwodr owdnr wodnr odwnr downr wdonr dwonr ondwr nodwr odnwr donwr ndowr dnowr wndor nwdor wdnor dwnor ndwor dnwor
Note: these 'words' (valid or invalid) are all the permutations of the word rownd. These words are obtained by scrambling the letters in rownd.