# 06. Group of 10's:
import math
nums = list(map(lambda x: int(x), input().split(", ")))
max_num = max(nums)
previous_group = 0
for i in range(1, (math.ceil(max_num / 10)) + 1):
    current_group = i * 10
    filtered_numbers = [number for number in nums if previous_group < number <= current_group]
    previous_group += 10
    print(f"Group of {i * 10}'s: {filtered_numbers}")