diff --git a/tetris.py b/tetris.py
index 7457f4f..06d1fa6 100755
--- a/tetris.py
+++ b/tetris.py
@@ -10,13 +10,13 @@ import pygame
 class Tetrad:
     block_rotations = 4
     block_configs = [
-        (1, [[[1, 0], [1, 1], [1, 2], [1, 3]], [[0, 1], [1, 1], [2, 1], [3, 1]], [[1, 0], [1, 1], [1, 2], [1, 3]], [[0, 1], [1, 1], [2, 1], [3, 1]]]), # Shape_I
-        (2, [[[0, 1], [1, 1], [2, 1], [1, 2]], [[1, 0], [1, 1], [2, 1], [1, 2]], [[1, 0], [0, 1], [1, 1], [2, 1]], [[1, 0], [0, 1], [1, 1], [1, 2]]]), # Shape T
-        (3, [[[0, 0], [0, 1], [1, 0], [1, 1]], [[0, 0], [0, 1], [1, 0], [1, 1]], [[0, 0], [0, 1], [1, 0], [1, 1]], [[0, 0], [0, 1], [1, 0], [1, 1]]]), # Shape O
-        (4, [[[1, 0], [1, 1], [1, 2], [2, 2]], [[2, 0], [2, 1], [1, 1], [0, 1]], [[0, 0], [1, 0], [1, 1], [1, 2]], [[0, 1], [1, 1], [2, 1], [0, 2]]]), # Shape L
-        (5, [[[1, 0], [1, 1], [1, 2], [0, 2]], [[2, 1], [2, 2], [1, 1], [0, 1]], [[1, 0], [2, 0], [1, 1], [1, 2]], [[0, 0], [1, 1], [2, 1], [0, 1]]]), # Shape J
-        (6, [[[1, 1], [2, 1], [0, 2], [1, 2]], [[1, 0], [1, 1], [2, 1], [2, 2]], [[1, 1], [2, 1], [0, 2], [1, 2]], [[1, 0], [1, 1], [2, 1], [2, 2]]]), # Shape S
-        (7, [[[0, 1], [1, 1], [1, 2], [2, 2]], [[1, 1], [1, 2], [2, 0], [2, 1]], [[0, 1], [1, 1], [1, 2], [2, 2]], [[1, 1], [1, 2], [2, 0], [2, 1]]])  # Shape Z
+        (1, [[(1, 0), (1, 1), (1, 2), (1, 3)], [(0, 1), (1, 1), (2, 1), (3, 1)], [(1, 0), (1, 1), (1, 2), (1, 3)], [(0, 1), (1, 1), (2, 1), (3, 1)]]), # Shape_I
+        (2, [[(0, 1), (1, 1), (2, 1), (1, 2)], [(1, 0), (1, 1), (2, 1), (1, 2)], [(1, 0), (0, 1), (1, 1), (2, 1)], [(1, 0), (0, 1), (1, 1), (1, 2)]]), # Shape T
+        (3, [[(0, 0), (0, 1), (1, 0), (1, 1)], [(0, 0), (0, 1), (1, 0), (1, 1)], [(0, 0), (0, 1), (1, 0), (1, 1)], [(0, 0), (0, 1), (1, 0), (1, 1)]]), # Shape O
+        (4, [[(1, 0), (1, 1), (1, 2), (2, 2)], [(2, 0), (2, 1), (1, 1), (0, 1)], [(0, 0), (1, 0), (1, 1), (1, 2)], [(0, 1), (1, 1), (2, 1), (0, 2)]]), # Shape L
+        (5, [[(1, 0), (1, 1), (1, 2), (0, 2)], [(2, 1), (2, 2), (1, 1), (0, 1)], [(1, 0), (2, 0), (1, 1), (1, 2)], [(0, 0), (1, 1), (2, 1), (0, 1)]]), # Shape J
+        (6, [[(1, 1), (2, 1), (0, 2), (1, 2)], [(1, 0), (1, 1), (2, 1), (2, 2)], [(1, 1), (2, 1), (0, 2), (1, 2)], [(1, 0), (1, 1), (2, 1), (2, 2)]]), # Shape S
+        (7, [[(0, 1), (1, 1), (1, 2), (2, 2)], [(1, 1), (1, 2), (2, 0), (2, 1)], [(0, 1), (1, 1), (1, 2), (2, 2)], [(1, 1), (1, 2), (2, 0), (2, 1)]])  # Shape Z
     ]