Code:

#include <bits/stdc++.h>
using namespace std;
int main(){
	string s;
	cin >> s;
	s+=",";
	int cnt=0;
	int x=0;
	int d=0;
	int n=0;
	int z=0;
	string t="";
	int ans=0;
	bool a=1,b=1,c=1;
	for(int i=0;s[i];i++){
		if(s[i]!=','){
			t+=s[i];
			cnt++;
			if('a'<=s[i]&&s[i]<='z'){
				x++;
				if(a){
					ans++;
					a=0;
				}
			}else if('A'<=s[i]&&s[i]<='Z'){
				d++;
				if(b){
					ans++;
					b=0;
				}
			}else if('0'<=s[i]&&s[i]<='9'){
				n++;
				if(c){
					ans++;
					c=0;
				}
			}else if(s[i]=='!'||s[i]=='@'||s[i]=='#'||s[i]=='$'){
				z++;
			}else{
				cnt=0;
				x=0;
				d=0;
				n=0;
				z=0;
				t="";
				ans=0;
				a=1;
				b=1;
				c=1;
				continue;
			}
		}else{
			if(cnt>=6&&cnt<=12&&z>0&&ans>=2){
				cout << t << endl;
			}
				cnt=0;
				x=0;
				d=0;
				n=0;
				z=0;
				t="";
				ans=0;
				a=1;
				b=1;
				c=1;
		}
		
	}
	return 0;
}