using namespace std;
#include <iostream>


int main()
{
	int i, j;
	char s[101], sol[201];

	cin.getline(s, 101);

	for (i = j = 0; s[i]; ++i)
	{
		switch (s[i])
		{
			case '.':
				break;
			case '-':
				break;
			case ',':
				sol[j++] = ' ';
				sol[j++] = ',';
				break;
			default:
				sol[j++] = s[i];
				break;
		}
	}

	sol[j] = '\0';

	cout << sol << '\n';

    return 0;
}