diff --git a/pset6/sentimental-readability/README.md b/pset6/sentimental-readability/README.md
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+++ b/pset6/sentimental-readability/README.md
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+https://cs50.harvard.edu/x/2023/psets/6/readability/
diff --git a/pset6/sentimental-readability/readability.py b/pset6/sentimental-readability/readability.py
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+++ b/pset6/sentimental-readability/readability.py
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+from cs50 import get_string
+
+
+def main():
+    text = get_string("Text: ")
+    grade = coleman_liau(count_letters(text), count_words(text), count_sentences(text))
+
+    if grade < 1:
+        print("Before Grade 1")
+    elif grade >= 16:
+        print("Grade 16+")
+    else:
+        print(f"Grade {grade}")
+
+
+def count_letters(text):
+    count = 0
+    for char in text:
+        if char.isalpha():
+            count += 1
+    return count
+
+
+def count_words(text):
+    # Assumptions that a sentence:
+    # - will contain at least one word;
+    # - will not start or end with a space; and
+    # - will not have multiple spaces in a row.
+
+    count = 1
+    for char in text:
+        if char == " ":
+            count += 1
+    return count
+
+
+def count_sentences(text):
+    # Assumptions that a sentence:
+    # - is any sequence of characters that ends with a . or a ! or a ?;
+    # Sentence boundary detection here is rudimentary
+
+    count = 0
+    for char in text:
+        if char in [".", "?", "!"]:
+            count += 1
+    return count
+
+
+def coleman_liau(letter_count, word_count, sentence_count):
+    L = letter_count / word_count * 100
+    S = sentence_count / word_count * 100
+    return round(0.0588 * L - 0.296 * S - 15.8)
+
+
+if __name__ == "__main__":
+    main()
+