swung wsung suwng uswng wusng uwsng swnug wsnug snwug nswug wnsug nwsug sunwg usnwg snuwg nsuwg unswg nuswg wunsg uwnsg wnusg nwusg unwsg nuwsg swugn wsugn suwgn uswgn wusgn uwsgn swgun wsgun sgwun gswun wgsun gwsun sugwn usgwn sguwn gsuwn ugswn guswn wugsn uwgsn wgusn gwusn ugwsn guwsn swngu wsngu snwgu nswgu wnsgu nwsgu swgnu wsgnu sgwnu gswnu wgsnu gwsnu sngwu nsgwu sgnwu gsnwu ngswu gnswu wngsu nwgsu wgnsu gwnsu ngwsu gnwsu sungw usngw snugw nsugw unsgw nusgw sugnw usgnw sgunw gsunw ugsnw gusnw snguw nsguw sgnuw gsnuw ngsuw gnsuw ungsw nugsw ugnsw gunsw ngusw gnusw wungs uwngs wnugs nwugs unwgs nuwgs wugns uwgns wguns gwuns ugwns guwns wngus nwgus wgnus gwnus ngwus gnwus ungws nugws ugnws gunws nguws gnuws
Note: these 'words' (valid or invalid) are all the permutations of the word swung. These words are obtained by scrambling the letters in swung.