dools odols dools odols oodls oodls dolos odlos dloos ldoos oldos lodos dolos odlos dloos ldoos oldos lodos oolds oolds olods loods olods loods doosl odosl doosl odosl oodsl oodsl dosol odsol dsool sdool osdol sodol dosol odsol dsool sdool osdol sodol oosdl oosdl osodl soodl osodl soodl dolso odlso dloso ldoso oldso lodso doslo odslo dsolo sdolo osdlo sodlo dlsoo ldsoo dsloo sdloo lsdoo sldoo olsdo losdo osldo soldo lsodo slodo dolso odlso dloso ldoso oldso lodso doslo odslo dsolo sdolo osdlo sodlo dlsoo ldsoo dsloo sdloo lsdoo sldoo olsdo losdo osldo soldo lsodo slodo oolsd oolsd olosd loosd olosd loosd oosld oosld osold soold osold soold olsod losod oslod solod lsood slood olsod losod oslod solod lsood slood
Note: these 'words' (valid or invalid) are all the permutations of the word dools. These words are obtained by scrambling the letters in dools.