#include <cstdio>
#include <iostream>
#include <cstring>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;

string s;

int main()
{
	getline(cin, s);
	for (int i = 0; i < s.length(); i++) {
		if (s[i] == '-' || s[i] == '.') continue;
		if (s[i] == ',') printf(" ");
		printf("%c", s[i]);
	}
	printf("\n");
	return 0;
}