diff --git a/src/rhymes_with/rhymes.py b/src/rhymes_with/rhymes.py
index 222b020..1bff2b1 100644
--- a/src/rhymes_with/rhymes.py
+++ b/src/rhymes_with/rhymes.py
@@ -1,4 +1,11 @@
 def does_rhyme(word1: str, word2: str, length: int = 3) -> bool:
+    """
+    :returns: True if word1 and word2 rhymes.
+    """
+    return does_perfectly_rhyme(word1, word2) or does_pararhyme(word1, word2)
+
+
+def does_perfectly_rhyme(word1: str, word2: str, length: int = 3) -> bool:
     """
     :returns: True iff word1 and word2 has the
         same ending up to length.
@@ -7,6 +14,26 @@ def does_rhyme(word1: str, word2: str, length: int = 3) -> bool:
     return word1[-length:] == word2[-length:]
 
 
+def does_pararhyme(word1: str, word2: str) -> bool:
+    """
+    :returns: True if word1 and word2 has mathcing
+        consonants.
+    """
+
+    if not (len(word1) == len(word2)):
+        return False
+
+    for letter1, letter2 in zip(word1, word2):
+        if not letter1 == letter2 and not is_vowels(letter1, letter2):
+            return False
+    return True
+
+
+def is_vowels(letter1, letter2):
+    vovels = ["a", "e", "i", "o", "u"]
+    return letter1 in vovels and letter2 in vovels
+
+
 def filter_rhymes(word: str, dictionary: [str]) -> [str]:
     """
     :returns: the strings in dictionary that does_rhyme
diff --git a/tests/test_rhymes.py b/tests/test_rhymes.py
index 71c219e..c8ea41a 100644
--- a/tests/test_rhymes.py
+++ b/tests/test_rhymes.py
@@ -3,3 +3,11 @@
 
 def test_cook_rhymes_with_book():
     assert does_rhyme("book", "cook")
+
+
+def test_tick_pararhymes_with_tock():
+    assert does_rhyme("tick", "tock")
+
+
+def test_ticks_does_not_pararhymes_with_tock():
+    assert not does_rhyme("ticks", "tock")