#include <bits/stdc++.h>
using namespace std;
int sz;
int dx;
int xx;
int ts;
int jcq;
string len;
string str;
int main() {
    cin >> str;
    for (int i = 0; i < str.size(); i++) {
        if (str[i] == ',' || i == str.size() - 1) {
            // check
            /*
            1,排除非法字符（看jcq)如果是，跳过。
            2，长短限制：6~12
            3，数字+大写+小写>=2，特殊》=1.
            */
            if (jcq > 0) continue;
            if (len.size() < 6 || len.size() > 12) continue;
            if (sz + dx + xx < 2) continue;
            if (ts < 1) continue;
            cout << len << endl;
            // clear
            sz = 0;
            dx = 0;
            xx = 0;
            ts = 0;
            len = "";
            jcq = 0;
        } else {
            len += str[i];
            if (str[i] <= '9' && str[i] >= '0') {
                sz = true;
            } else if (str[i] <= 'Z' && str[i] >= 'A') {
                dx = true;
            } else if (str[i] <= 'z' && str[i] >= 'a') {
                xx = true;
            } else if (str[i] == '!' || str[i] == '@' || str[i] == '#' || str[i] == '$') {
                ts = true;
            } else
                jcq++;
        }
    }
    return 0;
}