flood lfood folod oflod lofod olfod flood lfood folod oflod lofod olfod foold ofold foold ofold oofld oofld loofd olofd loofd olofd oolfd oolfd flodo lfodo foldo ofldo lofdo olfdo fldoo lfdoo fdloo dfloo ldfoo dlfoo fodlo ofdlo fdolo dfolo odflo doflo lodfo oldfo ldofo dlofo odlfo dolfo flodo lfodo foldo ofldo lofdo olfdo fldoo lfdoo fdloo dfloo ldfoo dlfoo fodlo ofdlo fdolo dfolo odflo doflo lodfo oldfo ldofo dlofo odlfo dolfo foodl ofodl foodl ofodl oofdl oofdl fodol ofdol fdool dfool odfol dofol fodol ofdol fdool dfool odfol dofol oodfl oodfl odofl doofl odofl doofl loodf olodf loodf olodf ooldf ooldf lodof oldof ldoof dloof odlof dolof lodof oldof ldoof dloof odlof dolof oodlf oodlf odolf doolf odolf doolf
Note: these 'words' (valid or invalid) are all the permutations of the word flood. These words are obtained by scrambling the letters in flood.