P = 177
MOD = 192073433

def main():
    strings = input().split(",")
    string_hashes = []
    max_string_length = 0
    for string in strings:
        hashes = [0]
        for i in range(len(string)):
             hashes.append((hashes[-1] * P + ord(string[i])) % MOD)
        string_hashes.append(hashes)
        max_string_length = max(max_string_length, len(string))

    pows = [1] # P ** i
    for i in range(max_string_length + 1):
        pows.append(pows[-1] * P % MOD)

    sorted_indices = list(range(len(strings)))
    sorted_indices = sorted(sorted_indices, key=lambda i: len(strings[i]))

    disabled_hashes = set()
    answers = [None for _ in strings]
    for i in sorted_indices:
        string = strings[i]
        hashes = string_hashes[i]

        hash_to_be_disabled = []
        min_length = len(string) + 1
        for x in range(len(string)):
            for y in range(x, len(string)):
                substr_hash = (hashes[y + 1] - hashes[x] * pows[y + 1 - x]) % MOD
                substr_hash = (substr_hash + MOD) % MOD
                hash_to_be_disabled.append(substr_hash)
                if substr_hash not in disabled_hashes and min_length > (y - x + 1):
                    min_length = y - x + 1
                    answers[i] = (x, y)

        disabled_hashes.update(hash_to_be_disabled)

    print(",".join([strings[i][x: y + 1] for i, (x, y) in enumerate(answers)]))


if __name__ == "__main__":
    main()