wools owols wools owols oowls oowls wolos owlos wloos lwoos olwos lowos wolos owlos wloos lwoos olwos lowos oolws oolws olows loows olows loows woosl owosl woosl owosl oowsl oowsl wosol owsol wsool swool oswol sowol wosol owsol wsool swool oswol sowol ooswl ooswl osowl soowl osowl soowl wolso owlso wloso lwoso olwso lowso woslo owslo wsolo swolo oswlo sowlo wlsoo lwsoo wsloo swloo lswoo slwoo olswo loswo oslwo solwo lsowo slowo wolso owlso wloso lwoso olwso lowso woslo owslo wsolo swolo oswlo sowlo wlsoo lwsoo wsloo swloo lswoo slwoo olswo loswo oslwo solwo lsowo slowo oolsw oolsw olosw loosw olosw loosw ooslw ooslw osolw soolw osolw soolw olsow losow oslow solow lsoow sloow olsow losow oslow solow lsoow sloow
Note: these 'words' (valid or invalid) are all the permutations of the word wools. These words are obtained by scrambling the letters in wools.