C++ :

#include<bits/stdc++.h>
using namespace std;
typedef long long LL;
int main() {
	string m;
	getline(cin, m);
	vector<string> arry;
	string j;
	for (char k : m) {
		if (k == ',') {
			if (!j.empty()) {
				arry.push_back(j);
				j.clear();
			}
		} else {
			j += k;
		}
	}
	if (!j.empty()) {
		arry.push_back(j);
	}
	for (string &y : arry) {
		LL l = y.length();
		if (l < 6 || l > 12) {
			continue;
		}
		bool u = false, i = false, o = false;
		bool p = false;
		bool n = true;
		for (char k : y) {
			if (k >= 'a' && k <= 'z') {
				u = true;
			} else if (k >= 'A' && k <= 'Z') {
				i = true;
			} else if (k >= '0' && k <= '9') {
				o = true;
			} else if (k == '!' || k == '@' || k == '#' || k == '$') {
				p = true;
			} else {
				n = false;
				break;
			}
		}
		LL h = 0;
		if (u == true) {
			h++;
		}
		if (i == true) {
			h++;
		}
		if (o == true) {
			h++;
		}
		if (p && n && h >= 2) {
			cout << y << endl;
		}
	}
	return 0;
}