diff --git a/RotTable.py b/RotTable.py
index 37762b4121d2412f728194a4da8245389cc6a30a..093082020f0c1b6b344c9818f438c90b37f82d32 100644
--- a/RotTable.py
+++ b/RotTable.py
@@ -40,9 +40,21 @@ class RotTable:
         "TA": "TA",\
         "TC": "GA",\
         "TG": "CA",\
-        "TT": "AA",\
+        "TT": "AA"\
         }
 
+    __SOUS_CORRESPONDANCE = {\
+        "AA": "TT",\
+        "AC": "GT",\
+        "AG": "CT",\
+        "AT": "AT",\
+        "CA": "TG",\
+        "CC": "GG",\
+        "CG": "CG",\
+        "GA": "TC",\
+        "GC": "GC",\
+        "TA": "TA"\
+        }
     # get the angles in each axis (x, y, z), considering the deviation
     def __init__(self):
         self.rot_table = {}
@@ -53,9 +65,11 @@ class RotTable:
     # get a random deviation, considering the "limits" given in the last 3 columns
     # of __ORIGINAL_ROT_TABLE
     def alea(self):
-        for dinucleotide in RotTable.__ORIGINAL_ROT_TABLE:
+        for dinucleotide in RotTable.__SOUS_CORRESPONDANCE:
             for i in range(2):
-                self.rot_table[dinucleotide][i] += numpy.random.uniform(low = -RotTable.__ORIGINAL_ROT_TABLE[dinucleotide][i+3], high= RotTable.__ORIGINAL_ROT_TABLE[dinucleotide][i+3]) 
+                delta = numpy.random.uniform(low = -RotTable.__ORIGINAL_ROT_TABLE[dinucleotide][i+3], high= RotTable.__ORIGINAL_ROT_TABLE[dinucleotide][i+3])
+                self.rot_table[dinucleotide][i] += delta
+                self.rot_table[RotTable.__SOUS_CORRESPONDANCE[dinucleotide]][i] += delta
 
     # return __ORIGINAL_ROT_TABLE
     def orta(self):
@@ -86,6 +100,5 @@ class RotTable:
     ###################
 
 table1 = RotTable()
-print(table1.orta())
 
-print(table1.rot_table["AA"])
+print(table1.rot_table)