sheas hseas sehas eshas hesas ehsas shaes hsaes sahes ashes hases ahses seahs esahs saehs asehs eashs aeshs heass ehass haess ahess eahss aehss shesa hsesa sehsa eshsa hessa ehssa shsea hssea sshea sshea hssea shsea sesha essha sseha sseha essha sesha hessa ehssa hsesa shesa eshsa sehsa shase hsase sahse ashse hasse ahsse shsae hssae sshae sshae hssae shsae sashe asshe ssahe ssahe asshe sashe hasse ahsse hsase shase ashse sahse seash esash saesh asesh eassh aessh sesah essah sseah sseah essah sesah saseh asseh ssaeh ssaeh asseh saseh eassh aessh esash seash asesh saesh heass ehass haess ahess eahss aehss hesas ehsas hseas sheas eshas sehas hases ahses hsaes shaes ashes sahes eashs aeshs esahs seahs asehs saehs
Note: these 'words' (valid or invalid) are all the permutations of the word sheas. These words are obtained by scrambling the letters in sheas.