#include <bits/stdc++.h>
using namespace std;
bool isTrue(string s){
	int l=s.length();
	if(l<6||l>12)
		return false;
	int xxzm=0,dxzm=0,sz=0,zf=0;
	for(int i=0;i<l;i++){
		if(s[i]>='a'&&s[i]<='z') xxzm++;
		if(s[i]>='A'&&s[i]<='Z') dxzm++;
		if(s[i]>='0'&&s[i]<='9') sz++;
		if(s[i]=='!'||s[i]=='@'||s[i]=='#'||s[i]=='$') zf++;
	}
	if(xxzm+dxzm+sz+zf!=l)
		return false;
	if(((xxzm&&dxzm)||(xxzm&&sz)||(sz&&dxzm))&&zf)
		return true;
	else return false;
}
int main(){
    string s,a="";
    cin>>s;
    s=s+',';
    for(int i=0;i<s.length();i++){
    	if(s[i]!=','){
    		a+=s[i];
		}
		else{
			if(isTrue(a))
				cout<<a<<endl;
			a="";
		}
    }
    
    return 0;
}

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;
}