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