swing wsing siwng iswng wisng iwsng swnig wsnig snwig nswig wnsig nwsig sinwg isnwg sniwg nsiwg inswg niswg winsg iwnsg wnisg nwisg inwsg niwsg swign wsign siwgn iswgn wisgn iwsgn swgin wsgin sgwin gswin wgsin gwsin sigwn isgwn sgiwn gsiwn igswn giswn wigsn iwgsn wgisn gwisn igwsn giwsn swngi wsngi snwgi nswgi wnsgi nwsgi swgni wsgni sgwni gswni wgsni gwsni sngwi nsgwi sgnwi gsnwi ngswi gnswi wngsi nwgsi wgnsi gwnsi ngwsi gnwsi singw isngw snigw nsigw insgw nisgw signw isgnw sginw gsinw igsnw gisnw sngiw nsgiw sgniw gsniw ngsiw gnsiw ingsw nigsw ignsw ginsw ngisw gnisw wings iwngs wnigs nwigs inwgs niwgs wigns iwgns wgins gwins igwns giwns wngis nwgis wgnis gwnis ngwis gnwis ingws nigws ignws ginws ngiws gniws
Note: these 'words' (valid or invalid) are all the permutations of the word swing. These words are obtained by scrambling the letters in swing.