#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#define SIZE 100 

int main(void) 
{
	char *str = malloc(SIZE * sizeof(char));
	fgets(str, SIZE, stdin);
	for (int i = 0; i < SIZE; i++) {
		if (str[i] == '\n') {
			break;
		}
		if (str[i] != '.' && str[i] != '-') {
			if (str[i] == ',') {
				printf(" %c", str[i]);
				continue;
			}
			printf("%c", str[i]);
		}
	}
	free(str);
	return 0;
}