#include<bits/stdc++.h>
using namespace std;
string s;
const int N = 911;
char a[N];
int j = 1;
int letters, letterl, number, symbol;
int main() {
	cin >> s;
	for(int i = 0; i < s.size(); i++) {
		if(s[i] != ',') {
			a[j] = s[i];
			j++;
			if(s[i] >= 'a' && s[i] <= 'z') 
				letters++;
			if(s[i] >= 'A' && s[i] <= 'Z') 
				letterl++;
			if(s[i] >= '0' && s[i] <= '9') 
				number++;
			if(s[i] == '!' || s[i] == '@' || s[i] == '#' || s[i] == '$') 
				symbol++;
		}
		if(s[i] == ',') {
			
			if(j >= 7 && j <= 13 && (letters != 0 && letterl != 0 || letters != 0 && number != 0 || letterl !=0 && number !=0) && symbol >= 1 && letters + letterl + number + symbol == j - 1) {
				for(int k = 1; k <= j; k++){
					cout << a[k];
				}
				cout << endl;
			}
			j = 1;
			letters = 0;
			letterl = 0;
			number = 0;
			symbol = 0;
			memset(a, 0, sizeof(0));
		}
	}
	
	return 0;
}