import sys


def contains_number(line):
    result = ''.join((char if char in "0123456789" else " ") for char in line)
    list_of_nums = result.split()
    return " ".join([str(num) for num in list_of_nums])


for line in sys.stdin:
    words = contains_number(line).rstrip("\n")
    if words != "":
        print(words)