opens poens oepns eopns peons epons opnes pones onpes nopes pnoes npoes oenps eonps oneps noeps enops neops penos epnos pneos npeos enpos nepos opesn poesn oepsn eopsn peosn eposn opsen posen ospen sopen psoen spoen oespn eospn osepn soepn esopn seopn peson epson pseon speon espon sepon opnse ponse onpse nopse pnose npose opsne posne ospne sopne psone spone onspe nospe osnpe sonpe nsope snope pnsoe npsoe psnoe spnoe nspoe snpoe oensp eonsp onesp noesp enosp neosp oesnp eosnp osenp soenp esonp seonp onsep nosep osnep sonep nsoep snoep ensop nesop esnop senop nseop sneop penso epnso pneso npeso enpso nepso pesno epsno pseno speno espno sepno pnseo npseo psneo spneo nspeo snpeo enspo nespo esnpo senpo nsepo snepo
Note: these 'words' (valid or invalid) are all the permutations of the word opens. These words are obtained by scrambling the letters in opens.