#include <bits/stdc++.h>
#define pb push_back
#define s second
#define pii pair<int, int>
#define mp make_pair
 
using namespace std;
 
const int MAX = 105;

char str[MAX];

int main() {
	fgets(str, 100, stdin);
	string output = "";
	int n = strlen(str);
	for (int i = 0; i < n; i++) {
		if (str[i] == '-' || str[i] == '.')
			continue;
		else if (str[i] == ',')
			output += " ,";
		else output += str[i];
	}
	cout << output;
	return 0;
}