Twin Towers #1 Number of Tiles : 2 Twin Towers #2 Number of Tiles : 3 Twin Towers #3 Number of Tiles : 3 Twin Towers #4 Number of Tiles : 6 Twin Towers #5 Number of Tiles : 6 Twin Towers #6 Number of Tiles : 4 Twin Towers #7 Number of Tiles : 6 Twin Towers #8 Number of Tiles : 49 Twin Towers #9 Number of Tiles : 1 Twin Towers #10 Number of Tiles : 20 Twin Towers #11 Number of Tiles : 1 Twin Towers #12 Number of Tiles : 3 Twin Towers #13 Number of Tiles : 12 Twin Towers #14 Number of Tiles : 3 Twin Towers #15 Number of Tiles : 21 Twin Towers #16 Number of Tiles : 8 Twin Towers #17 Number of Tiles : 17 Twin Towers #18 Number of Tiles : 7