#include<iostream>
#include<string>
using namespace std;

string s, s1;

int main()
{
	getline(cin,s);


	for (int i = 0; i < s.size(); ++i){
		if (s[i] == '-' || s[i]=='.') continue;
		if ( s[i] == ',') s1 += ' ';
		s1 += s[i];
	}
	cout << s1;
	return 0;
}