diff --git a/u4/word_count.py b/u4/word_count.py
new file mode 100644
index 0000000..ac196ca
--- /dev/null
+++ b/u4/word_count.py
@@ -0,0 +1,9 @@
+from collections import Counter
+import re
+
+
+def count_words(sentence):
+    pattern = r"[a-zA-ZáčďéíĺľňóôŕšťúýžÁČĎÉÍĹĽŇÓÔŔŠŤÚÝŽ0-9]+(?:'[a-zA-ZáčďéíĺľňóôŕšťúýžÁČĎÉÍĹĽŇÓÔŔŠŤÚÝŽ0-9]+)?"
+    clean_sentence = sentence.lower()
+    found_words = re.findall(pattern, clean_sentence)
+    return dict(Counter(found_words))
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