#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s;
	bool u=true;
	cin>>s;
	int flg1=0,flg2=0,flg3=0,flg4=0,len=0,cnt=0;
	for(int i=0;i<s.length();i++)
	{
		if(s[i]==',')
		{
			
			if((flg1==1&&flg2==1)||(flg2==1&&flg3==1)||(flg1==1&&flg3==1))
			{
				if(flg4==1&&u)
				{
					for(int j=cnt;j<i;j++)cout<<s[j];
					cout<<"\n";
				}
			}
			cnt=i+1;
			flg1=0,flg2=0,flg3=0,flg4=0,len=0;
			u=true;
		}
		len++;
		if(s[i]>='a'&&s[i]<='z') flg1=1;
		else if(s[i]>='A'&&s[i]<='Z')flg2=1;
		else if(s[i]>='0' and s[i]<='9')flg3=1;
		else if(s[i]=='!'||s[i]=='@'||s[i]=='#'||s[i]=='$')flg4=1;
		else if(s[i]!=',')u=false;
	}
	return 0;
}