#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define ld long double
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pdd pair<ld, ld>
#define all(x) (x).begin(), (x).end()
#define fi first
#define se second

char s[1005];
string t;

int main() {
    cin.sync_with_stdio(false);

    fgets(s,1005,stdin);
    int n = strlen(s);

    for (int i = 0; i < n; i++) {
        if (s[i] == '-' || s[i] == '.')
            continue;
        if (s[i] == ',') {
            t += ' ';
        }
        t += s[i];
    }

    cout << t;

    return 0;
}