import re

text = input()
words = re.findall(r"[^\W_]+(?:'[^\W_]+)?", text.lower(), re.UNICODE)
counts = {}

for word in words:
    if word in counts:
        counts[word] += 1
    else:
        counts[word] = 1

for word, count in sorted(counts.items()):
    print(f"{word}: {count}")