diff --git a/src/my_project/interviews/top_150_questions_round_16/word_pattern.py b/src/my_project/interviews/top_150_questions_round_16/word_pattern.py
new file mode 100644
index 00000000..92adb8f1
--- /dev/null
+++ b/src/my_project/interviews/top_150_questions_round_16/word_pattern.py
@@ -0,0 +1,23 @@
+from typing import List, Union, Collection, Mapping, Optional
+from abc import ABC, abstractmethod
+from collections import defaultdict
+
+class Solution:
+    def wordPattern(self, pattern: str, s: str) -> bool:
+
+        dic_answer = defaultdict(str)
+
+        words = s.split(' ')
+
+        if len(words) != len(pattern) or len(set(words)) != len(set(pattern)):
+            return False 
+        else: 
+            for k, v in enumerate(words):
+                if v in dic_answer:
+                    if dic_answer[v] != pattern[k]:
+                        return False 
+                else: 
+                    dic_answer[v] = pattern[k]
+
+        return True 
+
diff --git a/tests/test_150_questions_round_12/test_invert_binary_tree_round_12.py b/tests/test_150_questions_round_12/test_invert_binary_tree_round_12.py
index bc945cd9..42ae4ee8 100644
--- a/tests/test_150_questions_round_12/test_invert_binary_tree_round_12.py
+++ b/tests/test_150_questions_round_12/test_invert_binary_tree_round_12.py
@@ -1,5 +1,5 @@
 import unittest
-from my_project.interviews.top_150_questions_round_12\
+from src.my_project.interviews.top_150_questions_round_12\
 .invert_binary_tree import Solution, TreeNode
 
 class InvertTreeTestCase(unittest.TestCase):
diff --git a/tests/test_150_questions_round_16/test_word_pattern_round_16.py b/tests/test_150_questions_round_16/test_word_pattern_round_16.py
new file mode 100644
index 00000000..f251ce2e
--- /dev/null
+++ b/tests/test_150_questions_round_16/test_word_pattern_round_16.py
@@ -0,0 +1,20 @@
+import unittest
+from src.my_project.interviews.top_150_questions_round_16\
+.word_pattern import Solution
+
+class WordPatternTestCase(unittest.TestCase):
+
+    def test_is_word_pattern(self):
+        solution = Solution()
+        output = solution.wordPattern(pattern="abba", s="dog cat cat dog")
+        self.assertTrue(output)
+
+    def test_is_no_word_pattern_one(self):
+        solution = Solution()
+        output = solution.wordPattern(pattern="abc", s="dog cat cat fish")
+        self.assertFalse(output)
+
+    def test_is_no_word_pattern_two(self):
+        solution = Solution()
+        output = solution.wordPattern(pattern="aa", s="dog cat cat fish")
+        self.assertFalse(output)
\ No newline at end of file
diff --git a/tests/test_150_questions_round_7/test_binary_tree_round_7.py b/tests/test_150_questions_round_7/test_binary_tree_round_7.py
index d547b6cb..17cdc884 100644
--- a/tests/test_150_questions_round_7/test_binary_tree_round_7.py
+++ b/tests/test_150_questions_round_7/test_binary_tree_round_7.py
@@ -1,5 +1,5 @@
 import unittest
-from my_project.interviews.top_150_questions_round_7\
+from src.my_project.interviews.top_150_questions_round_7\
 .invert_binary_tree import TreeNode, Solution
 
 class InvertTreeTestCase(unittest.TestCase):
diff --git a/tests/test_150_questions_round_9/test_number_of_bits_round_9.py b/tests/test_150_questions_round_9/test_number_of_bits_round_9.py
index 93737748..9843c2d1 100644
--- a/tests/test_150_questions_round_9/test_number_of_bits_round_9.py
+++ b/tests/test_150_questions_round_9/test_number_of_bits_round_9.py
@@ -1,5 +1,5 @@
 import unittest
-from my_project.interviews.top_150_questions_round_9\
+from src.my_project.interviews.top_150_questions_round_9\
 .number_of_one_bits import Solution
 
 class NumberOfOnesTestCase(unittest.TestCase):