diff --git a/utils/constants.py b/utils/constants.py
index ce98ef5..7006547 100644
--- a/utils/constants.py
+++ b/utils/constants.py
@@ -56,15 +56,9 @@ SHAPES = {
     "J_R1":   [(0, 0), (0, 1), (1, 1), (2, 1)],
     "J_R2":   [(0, 0), (1, 0), (0, 1), (0, 2)],
     "J_R3":   [(0, 0), (1, 0), (2, 0), (2, 1)],
-    "S":      [(1, 0), (2, 0), (0, 1), (1, 1)],
-    "S_R1":   [(0, 0), (0, 1), (1, 1), (1, 2)],
-    "Z":      [(0, 0), (1, 0), (1, 1), (2, 1)],
-    "Z_R1":   [(1, 0), (0, 1), (1, 1), (0, 2)],
-    "BLOB": [
-        (0, 0), (1, 0), (2, 0),
-        (0, 1), (1, 1), (2, 1),
-        (0, 2), (1, 2), (2, 2)
-    ],
+    "LINE1": [(0, 0)],
+    "LINE2": [(0, 0), (1, 0)],
+    "LINE3": [(0, 0), (1, 0), (2, 0)],
 }
 
 COLORS = {