import sys


def find_indexes(word):
    indexes = []
    for index, w in enumerate(word):
        char = ord(w)
        if 48 <= int(char) <= 57:
            indexes.append(index)
    return indexes


def find_max_substring(indexes, word):
    output = ""
    substring = []
    max_substring = []
    substring.append(word[indexes[0]])

    for i in range(1, len(indexes), 1):
        prev = indexes[i-1]
        curr = indexes[i]

        if prev+1 == curr:
            substring.append(word[curr])
        else:
            output += "".join(substring) + " "
            if len(max_substring) < len(substring):
                max_substring = substring.copy()
            substring.clear()
            substring.append(word[curr])
    if output == "" and len(substring) > 0:
        output += "".join(substring) + " "
    return output.rstrip()


def max_line_digits(line):
    output = ""
    substrings = line.split(' ')
    for sub in substrings:
        number = []
        for s in sub:
            char = ord(s)
            if 48 <= int(char) <= 57:
                number.append(s)
            else:
                if number and number[-1] != " ":
                    number.append(" ")
        if len(number) > 0:
            output += "".join(number) + " "

    if output == '':
        return False
    else:
        output = output.replace("  ", " ")
        return print(output.rstrip())


for line in sys.stdin:
    max_line_digits(line)