posus opsus psous spous ospus sopus pouss opuss puoss uposs oupss uopss psuos spuos pusos upsos supos uspos osups soups ousps uosps suops usops possu opssu psosu sposu ospsu sopsu possu opssu psosu sposu ospsu sopsu pssou spsou pssou spsou sspou sspou osspu sospu osspu sospu ssopu ssopu pouss opuss puoss uposs oupss uopss posus opsus psous spous ospus sopus pusos upsos psuos spuos uspos supos ousps uosps osups soups usops suops psuso spuso pusso upsso supso uspso pssuo spsuo pssuo spsuo sspuo sspuo pusso upsso psuso spuso uspso supso suspo usspo ssupo ssupo usspo suspo osusp sousp oussp uossp suosp usosp ossup sosup ossup sosup ssoup ssoup oussp uossp osusp sousp usosp suosp susop ussop ssuop ssuop ussop susop
Note: these 'words' (valid or invalid) are all the permutations of the word posus. These words are obtained by scrambling the letters in posus.