longs olngs lnogs nlogs onlgs nolgs logns olgns lgons glons oglns golns lngos nlgos lgnos glnos nglos gnlos ongls nogls ognls gonls ngols gnols lonsg olnsg lnosg nlosg onlsg nolsg losng olsng lsong slong oslng solng lnsog nlsog lsnog slnog nslog snlog onslg noslg osnlg sonlg nsolg snolg logsn olgsn lgosn glosn oglsn golsn losgn olsgn lsogn slogn oslgn solgn lgson glson lsgon slgon gslon sglon ogsln gosln osgln sogln gsoln sgoln lngso nlgso lgnso glnso nglso gnlso lnsgo nlsgo lsngo slngo nslgo snlgo lgsno glsno lsgno slgno gslno sglno ngslo gnslo nsglo snglo gsnlo sgnlo ongsl nogsl ognsl gonsl ngosl gnosl onsgl nosgl osngl songl nsogl snogl ogsnl gosnl osgnl sognl gsonl sgonl ngsol gnsol nsgol sngol gsnol sgnol
Note: these 'words' (valid or invalid) are all the permutations of the word longs. These words are obtained by scrambling the letters in longs.