crawl rcawl carwl acrwl racwl arcwl crwal rcwal cwral wcral rwcal wrcal cawrl acwrl cwarl wcarl awcrl wacrl rawcl arwcl rwacl wracl awrcl warcl cralw rcalw carlw acrlw raclw arclw crlaw rclaw clraw lcraw rlcaw lrcaw calrw aclrw clarw lcarw alcrw lacrw ralcw arlcw rlacw lracw alrcw larcw crwla rcwla cwrla wcrla rwcla wrcla crlwa rclwa clrwa lcrwa rlcwa lrcwa cwlra wclra clwra lcwra wlcra lwcra rwlca wrlca rlwca lrwca wlrca lwrca cawlr acwlr cwalr wcalr awclr waclr calwr aclwr clawr lcawr alcwr lacwr cwlar wclar clwar lcwar wlcar lwcar awlcr walcr alwcr lawcr wlacr lwacr rawlc arwlc rwalc wralc awrlc warlc ralwc arlwc rlawc lrawc alrwc larwc rwlac wrlac rlwac lrwac wlrac lwrac awlrc walrc alwrc lawrc wlarc lwarc
Note: these 'words' (valid or invalid) are all the permutations of the word crawl. These words are obtained by scrambling the letters in crawl.