#include <bits/stdc++.h>
using namespace std;
string a;
string aa[100];
int len=0,kk=0,san=0,ts=0;
bool a1=false,a2=false,a3=false,io=true;
int main()
{
	cin>>a;
	for(int i=0;i<a.size();i++)
		if(a[i]==',')
		{
			for(int j=len;j<i;j++)
				aa[kk]=a[j];
			kk++;
			len=i+1;
		}	
	for(int i=0;i<=kk;i++)
	{
		if(aa[i].size()>6&&aa[i].size()<12)
		{
			for(int j=0;j<=aa[i].size();j++)
			{
				if(aa[j][i]<='z'&&aa[j][i]>='a'&&a1==false)		{san++;a1=true;}
				if(aa[j][i]<='Z'&&aa[j][i]>='A'&&!a2)	{san++;a2=true;}
				if(aa[j][i]<='0'&&aa[j][i]>='9'&&!a3)	{san++;a3=true;}
				if(aa[j][i]=='!'||aa[j][i]=='@'||aa[j][i]=='#'||aa[j][i]=='$'){ts++;}
				if(san>=2&&ts!=0) break;
				if((aa[j][i]<='z'&&aa[j][i]>='a')||(aa[j][i]<='Z'&&aa[j][i]>='A')||(aa[j][i]<='0'&&aa[j][i]>='9')||(aa[j][i]=='!'||aa[j][i]=='@'||aa[j][i]=='#'||aa[j][i]=='$'))
				continue;
				else
					io=false;
			}
			if(io)
				cout<<aa[i]<<endl;
		}
	}
	return 0;
}