#include <bits/stdc++.h>

using namespace std;

string S;
string ans;

int main() {
	// assert(freopen("lumber_dashes.in", "r", stdin));
	// assert(freopen("lumber_dashes.out", "w", stdout));
	cin.sync_with_stdio(false);

	getline(cin, S);
	for (size_t i = 0; i < S.size(); i++) {
		if (S[i] != '.' && S[i] != '-') {
			ans += S[i];
		}
	}

	S = ans;
	ans = "";
	for (size_t i = 0; i < S.size(); i++) {
		if (S[i] == ',') {
			ans += " ,";
		} else {
			ans += S[i];
		}
	}

	cout << ans << endl;

	return 0;
}