sloop lsoop solop oslop losop olsop sloop lsoop solop oslop losop olsop soolp osolp soolp osolp ooslp ooslp loosp olosp loosp olosp oolsp oolsp slopo lsopo solpo oslpo lospo olspo slpoo lspoo sploo psloo lpsoo plsoo soplo osplo spolo psolo opslo poslo lopso olpso lposo ploso oplso polso slopo lsopo solpo oslpo lospo olspo slpoo lspoo sploo psloo lpsoo plsoo soplo osplo spolo psolo opslo poslo lopso olpso lposo ploso oplso polso soopl osopl soopl osopl oospl oospl sopol ospol spool psool opsol posol sopol ospol spool psool opsol posol oopsl oopsl oposl poosl oposl poosl loops olops loops olops oolps oolps lopos olpos lpoos ploos oplos polos lopos olpos lpoos ploos oplos polos oopls oopls opols pools opols pools
Note: these 'words' (valid or invalid) are all the permutations of the word sloop. These words are obtained by scrambling the letters in sloop.