diff --git a/u2/list_ops.py b/u2/list_ops.py
index b7e2926..5f19ccb 100644
--- a/u2/list_ops.py
+++ b/u2/list_ops.py
@@ -6,46 +6,42 @@ def append(list1, list2):
         pusti.append(exc)
     return pusti
 
-    def concat(list):
+def concat(lists):
     pusti = []
-    for gns in list:
+    for gns in lists:
         pusti.extend(gns)
     return pusti
 
-    def filter(function, list):
+def filter(function, list):
     pusti = []
     for gns in list:
         if function(gns):
             pusti.append(gns)
     return pusti
 
-    def length(list):
+def length(list):
     pocatok = 0
     for gns in list:
         pocatok = pocatok + 1
     return pocatok
 
-    def map(function, list):
-     pusti = []
-     for gns in list:
-        function(gns)
-        pusti.append(function(gns))
-     return pusti
-
-    def foldl(function, accumulator, initial):
-        accumulator = initial
-        for gns in list:
-         accumulator = function(accumulator, gns)
-        return accumulator
-
-    def foldr(function, initial, acc):
-        acc = initial
-        for gns in list[::-1]:
-            acc = function(gns, acc)
-        return acc
-
-    def reverse(list):
-      pusti = []
+def map(function, list):
+    pusti = []
     for gns in list:
-     pusti.append(gns)
-    return pusti[::-1]
\ No newline at end of file
+        pusti.append(function(gns))
+    return pusti
+
+def foldl(function, list, initial):
+    accumulator = initial
+    for gns in list:
+        accumulator = function(accumulator, gns)
+    return accumulator
+
+def foldr(function, list, initial):
+    acc = initial
+    for gns in list[::-1]:
+        acc = function(gns, acc)
+    return acc
+
+def reverse(list):
+    return list[::-1]