Zaaz Puzzles

In the Zaaz language, all the words are 4 letters long, and only use the letters A and Z. For each pair of grids, put an A or Z in each blank square so that the 16 words formed are all different. Extra credit for figuring out how to pronounce these words!

1. 2. 3.
4. 5. 6.
7. 8. 9.
10. 11. 12.

The Solutions are here.