saner asner snaer nsaer anser naser saenr asenr seanr esanr aesnr easnr snear nsear senar esnar nesar ensar anesr naesr aensr eansr neasr enasr sanre asnre snare nsare ansre nasre sarne asrne srane rsane arsne rasne snrae nsrae srnae rsnae nrsae rnsae anrse narse arnse ranse nrase rnase saern asern searn esarn aesrn easrn saren asren sraen rsaen arsen rasen seran esran srean rsean ersan resan aersn earsn aresn raesn erasn reasn snera nsera senra esnra nesra ensra snrea nsrea srnea rsnea nrsea rnsea serna esrna srena rsena ersna resna nersa enrsa nresa rnesa ernsa rensa aners naers aenrs eanrs nears enars anres nares arnes ranes nraes rnaes aerns earns arens raens erans reans neras enras nreas rneas ernas renas
Note: these 'words' (valid or invalid) are all the permutations of the word saner. These words are obtained by scrambling the letters in saner.