#include<bits/stdc++.h>
using namespace std;
string a[101];
bool pd(string s){
	bool upper=0,lower=0,num=0;
	if(s.size()<6||s.size()>12)return false;
	for(int i=0;i<s.size();i++){
		if(!isalnum(s[i])&&s[i]!='!'&&s[i]!='@'&&s[i]!='#'&&s[i]!='$')return false;
		if(isupper(s[i]))upper=1;
		if(islower(s[i]))lower=1;
		if(isdigit(s[i]))num=1;
	}
	return (upper&&lower)||(upper&&num)||(lower&&num);
}
int main(){
	string s,b="";
	int c=0;
	cin>>s;
	for(int i=0;i<s.size();i++){
		if(s[i]==',')a[++c]=b,b="";
		else b+=s[i];
	}
	a[++c]=b;
	for(int i=1;i<=c;i++){
		if(pd(a[i])){
			cout<<a[i]<<"\n";
		}
	} 
}