#include<bits/stdc++.h>
using namespace std;
string r;
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
    cin>>r;
    int A=r.size();
    string l="";
    bool h=true;
    for(int i=0;i<A;i++)
    {
    	if(i+1==A-1)
    	{
    		l+=r[i+1];
    		i++;
		}
    	if(r[i]==','||i==A-1)
    	{
    		if(h)
    		{
    			cout<<l<<"\n";
			}
			h=true;
			l="";
			continue;
		}
		if(isalnum(r[i])||isalpha(r[i])||r[i]=='!'||r[i]=='@'||r[i]=='#'||r[i]=='$')
    	{
    		l+=r[i];
		}
		else
		{
			h=false;
		}
	}
	return 0;
}