diff --git a/.gitignore/error correction b/.gitignore/error correction
index 9b32ef8..6ad7ba1 100644
--- a/.gitignore/error correction	
+++ b/.gitignore/error correction	
@@ -53,3 +53,14 @@ def string2frames(string, fill):
         b = string2bin(n)
         frames.append(b)
     return frames
+
+def appendParityColumn(frame, parity):
+    newFrame = []
+    for n in frame:
+        F1 = e.appendParity(n, parity)
+        newFrame.append(F1)
+    return newFrame
+
+def transpose(lst):
+    lst = list(map(list, zip(*lst)))
+    return lst