bizzy ibzzy bzizy zbizy izbzy zibzy bizzy ibzzy bzizy zbizy izbzy zibzy bzziy zbziy bzziy zbziy zzbiy zzbiy izzby zizby izzby zizby zziby zziby bizyz ibzyz bziyz zbiyz izbyz zibyz biyzz ibyzz byizz ybizz iybzz yibzz bzyiz zbyiz byziz ybziz zybiz yzbiz izybz ziybz iyzbz yizbz zyibz yzibz bizyz ibzyz bziyz zbiyz izbyz zibyz biyzz ibyzz byizz ybizz iybzz yibzz bzyiz zbyiz byziz ybziz zybiz yzbiz izybz ziybz iyzbz yizbz zyibz yzibz bzzyi zbzyi bzzyi zbzyi zzbyi zzbyi bzyzi zbyzi byzzi ybzzi zybzi yzbzi bzyzi zbyzi byzzi ybzzi zybzi yzbzi zzybi zzybi zyzbi yzzbi zyzbi yzzbi izzyb zizyb izzyb zizyb zziyb zziyb izyzb ziyzb iyzzb yizzb zyizb yzizb izyzb ziyzb iyzzb yizzb zyizb yzizb zzyib zzyib zyzib yzzib zyzib yzzib
Note: these 'words' (valid or invalid) are all the permutations of the word bizzy. These words are obtained by scrambling the letters in bizzy.