#include <bits/stdc++.h>
using namespace std;

string arr[1210], s, str;
char ch;
int cnt, len;
bool check(string s){
	int b1 = 0, b2 = 0, b3 = 0, b4 = 0;
	int len = s.size();
	if (len <= 6 || len >= 12) return false;
	for (int i = 0; i < len; i++){
		if ('A' <= s[i] && s[i] <= 'Z'){
			b1 = 1;
			continue;
		}
		if ('a' <= s[i] && s[i] <= 'z'){
			b2 = 1;
			continue;
		}
		if ('0' <= s[i] && s[i] <= '9'){
			b3 = 1;
			continue;
		}
		if (s[i] == '!' || s[i] == '@' || s[i] == '#' || s[i] == '$'){
			b4 = 1;
			continue;
		}
		return false;
	}
	if (b1 + b2 + b3 >= 2 && b4) return true;
	return false;
}
int main(){
	getline(cin, str);
	int l = str.size();
	for (int i = 0; i < l; i++){
		if (str[i] != ','){
			arr[cnt] += str[i];
		} else {
			cnt++;
		}
	}
	for (int i = 0; i < cnt; i++){
		s = arr[i];
		if (check(s)) cout << s << endl;		
	}
	return 0;
}