diff --git a/fourcell/README.md b/fourcell/README.md
index 2c02244..c7e2095 100644
--- a/fourcell/README.md
+++ b/fourcell/README.md
@@ -32,4 +32,23 @@ _______________  _______________
 | 5         6 |  | 4         5 |
 |             |  |             |
 ---------------  ---------------
-```
\ No newline at end of file
+```
+
+
+## Calibration Layout Order
+
+```   
+_______________  _______________ 
+|             |  |             |
+| 1   2 3   0 |  |             |
+|             |  |   1     2   |
+|             |  |             |
+| 0   3 2   1 |  |             |
+|             |  |             |
+| 1   2 3   0 |  |             |
+|             |  |             |
+|             |  |   0      3  |
+| 0   3 2   1 |  |             |
+|             |  |             |
+---------------  ---------------
+```