topos otpos tpoos ptoos optos potos toops otops toops otops ootps ootps tpoos ptoos topos otpos potos optos opots poots oopts oopts poots opots topso otpso tposo ptoso optso potso tospo otspo tsopo stopo ostpo sotpo tpsoo ptsoo tspoo stpoo pstoo sptoo opsto posto ospto sopto psoto spoto toosp otosp toosp otosp ootsp ootsp tosop otsop tsoop stoop ostop sotop tosop otsop tsoop stoop ostop sotop oostp oostp osotp sootp osotp sootp tposo ptoso topso otpso potso optso tpsoo ptsoo tspoo stpoo pstoo sptoo tospo otspo tsopo stopo ostpo sotpo posto opsto psoto spoto ospto sopto opost poost oopst oopst poost opost opsot posot ospot sopot psoot spoot oospt oospt osopt soopt osopt soopt posot opsot psoot spoot ospot sopot
Note: these 'words' (valid or invalid) are all the permutations of the word topos. These words are obtained by scrambling the letters in topos.