diff --git a/code.py b/code.py
index b7df65e..8db5e9d 100644
--- a/code.py
+++ b/code.py
@@ -9,7 +9,9 @@ import adafruit_adxl34x
 import conway  # Some functions are in an .mpy module for performance
 
 # Starting point:
-universe = conway.RANDOM_UNIVERSE(30)
+#   * VOID, GLIDER, BEATING_HEART, BLOOM, FROG
+#   * RANDOM_UNIVERSE(percentage)
+universe = conway.GLIDER
 
 
 # Create the i2c object for the trellis
diff --git a/lib/conway.mpy b/lib/conway.mpy
index e69f0ac..6645fd7 100644
Binary files a/lib/conway.mpy and b/lib/conway.mpy differ
diff --git a/src/conway.py b/src/conway.py
index a0fcfbb..bed9cde 100644
--- a/src/conway.py
+++ b/src/conway.py
@@ -9,13 +9,13 @@ ON = (80, 80, 50)
 
 # Some presets :
 VOID = [[False, False, False, False, False, False, False, False],
-          [False, False, False, False, False, False, False, False],
-          [False, False, False, False, False, False, False, False],
-          [False, False, False, False, False, False, False, False],
-          [False, False, False, False, False, False, False, False],
-          [False, False, False, False, False, False, False, False],
-          [False, False, False, False, False, False, False, False],
-          [False, False, False, False, False, False, False, False]]
+        [False, False, False, False, False, False, False, False],
+        [False, False, False, False, False, False, False, False],
+        [False, False, False, False, False, False, False, False],
+        [False, False, False, False, False, False, False, False],
+        [False, False, False, False, False, False, False, False],
+        [False, False, False, False, False, False, False, False],
+        [False, False, False, False, False, False, False, False]]
 
 GLIDER = [[False, False, False, False, False, False, False, False],
           [False, False, False, False, True, False, False, False],
@@ -35,6 +35,25 @@ BEATING_HEART = [[False, False, False, False, False, False, False, False],
                  [False, False, False, False, False, False, False, False],
                  [False, False, False, False, False, False, False, False]]
 
+BLOOM = [[False, False, False, False, False, False, False, False],
+         [False, False, False, False, False, False, False, False],
+         [False, False, True, True, True, False, False, False],
+         [False, True, False, True, False, True, False, False],
+         [False, False, True, True, True, False, False, False],
+         [False, False, False, False, False, False, False, False],
+         [False, False, False, False, False, False, False, False],
+         [False, False, False, False, False, False, False, False]]
+
+FROG = [[False, False, False, False, False, False, False, False],
+        [False, False, False, False, False, False, False, False],
+        [False, False, False, False, False, False, False, False],
+        [False, False, False, True, True, True, False, False],
+        [False, False, True, True, True, False, False, False],
+        [False, False, False, False, False, False, False, False],
+        [False, False, False, False, False, False, False, False],
+        [False, False, False, False, False, False, False, False]]
+
+_EXT_UNIVERSE = [[False for x_ext in range(10)] for y_ext in range(10)]
 
 def RANDOM_UNIVERSE(rate):
     return [[randrange(0,100) < rate for i in range(8) ] for j in range(8)]
@@ -52,7 +71,7 @@ def draw_universe(trellis, universe):
 
 def extend_universe(universe):
     """Extend an 8x8 universe to 10x10 with first and last columns and rows as in an donut-shaped universe"""
-    ext_universe = [[False for x_ext in range(10)] for y_ext in range(10)]
+    ext_universe = _EXT_UNIVERSE.copy()
 
     # Copy universe in an extended donut-shaped universe
     for x_ext in range(10):
@@ -77,15 +96,9 @@ def extend_universe(universe):
 def living_neighbour_count(xcoord, ycoord, ext_universe):
     """Count living cells around xcoord, ycoord"""
 
-    living_neighbours = []
-    living_neighbours.append(ext_universe[xcoord][ycoord])
-    living_neighbours.append(ext_universe[xcoord][ycoord+1])
-    living_neighbours.append(ext_universe[xcoord][ycoord+2])
-    living_neighbours.append(ext_universe[xcoord+1][ycoord])
-    living_neighbours.append(ext_universe[xcoord+1][ycoord+2])
-    living_neighbours.append(ext_universe[xcoord+2][ycoord])
-    living_neighbours.append(ext_universe[xcoord+2][ycoord+1])
-    living_neighbours.append(ext_universe[xcoord+2][ycoord+2])
+    living_neighbours = ext_universe[xcoord][ycoord:ycoord+3]
+    living_neighbours += ext_universe[xcoord+1][ycoord:ycoord+3:2]
+    living_neighbours += ext_universe[xcoord+2][ycoord:ycoord+3]
 
     return living_neighbours.count(True)