diff --git a/src/my_project/interviews/amazon_high_frequency_23/round_7/merge_intervals.py b/src/my_project/interviews/amazon_high_frequency_23/round_7/merge_intervals.py
new file mode 100644
index 00000000..af9c43e1
--- /dev/null
+++ b/src/my_project/interviews/amazon_high_frequency_23/round_7/merge_intervals.py
@@ -0,0 +1,17 @@
+from typing import List, Union, Collection, Mapping, Optional
+from abc import ABC, abstractmethod
+
+class Solution:
+    def merge(self, intervals: List[List[int]]) -> List[List[int]]:
+
+        list_answer = list()
+
+        for i in sorted(intervals, key=lambda i: i[0]):
+
+            if list_answer and i[0] <= list_answer[-1][-1]:
+                list_answer[-1][-1] = max(i[1], list_answer[-1][-1])
+            else: 
+                list_answer.append(i)
+
+        return list_answer
+
diff --git a/src/my_project/interviews/google_top_exercises/round_1/28_alien_dictionary.py b/src/my_project/interviews/google_top_exercises/round_1/28_alien_dictionary.py
index bee6c0f2..de5ba86d 100644
--- a/src/my_project/interviews/google_top_exercises/round_1/28_alien_dictionary.py
+++ b/src/my_project/interviews/google_top_exercises/round_1/28_alien_dictionary.py
@@ -57,11 +57,11 @@ def alienOrder_DFS(self, words: List[str]) -> str:
         adj = defaultdict(set)
         letters = {c for word in words for c in word}
 
-        print(list(zip(words, words[1:])))
+        print('debug 1',list(zip(words, words[1:])))
         for first, second in zip(words, words[1:]):
             for c1, c2 in zip(first, second):
-                print(list(zip(first,second)))
-                print(c1,c2)
+                print('debug 2', list(zip(first,second)))
+                print('debug 3',c1,c2)
                 if c1 != c2:
                     adj[c1].add(c2)
                     break