diff --git a/compiler/modules/bitcell_array.py b/compiler/modules/bitcell_array.py
index c4aa8c5d..6d546baa 100644
--- a/compiler/modules/bitcell_array.py
+++ b/compiler/modules/bitcell_array.py
@@ -60,12 +60,10 @@ class bitcell_array(bitcell_base_array):
 
     def create_instances(self):
         self.cell_inst={}
-        core_block = [[0 for x in range(2)] for y in range(2)]
-        # block[col][row
-        core_block[(0 + self.column_offset) %2][0] = geometry.instance("core_0_0", mod=self.cell, is_bitcell=True)
-        core_block[(0 + self.column_offset) %2][1] = geometry.instance("core_1_0", mod=self.cell, is_bitcell=True, mirror='MX')
-        core_block[(1 + self.column_offset) %2][0] = geometry.instance("core_0_1", mod=self.cell, is_bitcell=True, mirror='MY')
-        core_block[(1 + self.column_offset) %2][1] = geometry.instance("core_1_1", mod=self.cell, is_bitcell=True, mirror='XY')
+        core_block = [[0 for x in range(1)] for y in range(2)]
+        # block[row][col]
+        core_block[0][0] = geometry.instance("core_0_0", mod=self.cell, is_bitcell=True)
+        core_block[1][0] = geometry.instance("core_1_0", mod=self.cell, is_bitcell=True, mirror='MX')
 
         self.pattern = pattern(self, "bitcell_array", core_block, num_rows=self.row_size, num_cols=self.column_size)
         self.pattern.connect_array()
diff --git a/compiler/modules/dummy_array.py b/compiler/modules/dummy_array.py
index f890d98e..73d6dc0e 100644
--- a/compiler/modules/dummy_array.py
+++ b/compiler/modules/dummy_array.py
@@ -52,11 +52,9 @@ class dummy_array(bitcell_base_array):
     def create_instances(self):
         """ Create the module instances used in this design """
         self.cell_inst={}
-        core_block = [[0 for x in range(2)] for y in range(2)]
-        core_block[(0 + self.column_offset) %2][(0+self.mirror) %2] = geometry.instance("core_0_0", mod=self.dummy_cell, is_bitcell=True)
-        core_block[(0 + self.column_offset) %2][(1+self.mirror) %2] = geometry.instance("core_1_0", mod=self.dummy_cell, is_bitcell=True, mirror='MX')
-        core_block[(1 + self.column_offset) %2][(0+self.mirror) %2] = geometry.instance("core_0_1", mod=self.dummy_cell, is_bitcell=True, mirror='MY')
-        core_block[(1 + self.column_offset) %2][(1+self.mirror) %2] = geometry.instance("core_1_1", mod=self.dummy_cell, is_bitcell=True, mirror='XY')
+        core_block = [[0 for x in range(1)] for y in range(2)]
+        core_block[(0+self.mirror) %2][0] = geometry.instance("core_0_0", mod=self.dummy_cell, is_bitcell=True)
+        core_block[(1+self.mirror) %2][0] = geometry.instance("core_1_0", mod=self.dummy_cell, is_bitcell=True, mirror='MX')
 
 
         self.pattern = pattern(self, "dummy_array", core_block, num_rows=self.row_size, num_cols=self.column_size)
diff --git a/compiler/modules/pattern.py b/compiler/modules/pattern.py
index 3cbd5a08..01f106bc 100644
--- a/compiler/modules/pattern.py
+++ b/compiler/modules/pattern.py
@@ -108,7 +108,7 @@ class pattern():
         for dr in range(len(block)):
             for dc in range(len(block[0])):
                 if(self.bit_rows.count(self.num_rows) != self.num_cols and self.bit_cols.count(self.bit_cols) != self.num_rows):
-                    inst = block[dc][dr]
+                    inst = block[dr][dc]
                     if(len(self.bit_rows) <= col + dc):
                         self.bit_rows.append(0)
                     if(len(self.bit_cols) <= row + dr):