#include <cstdio>
#include <iostream>
#include <algorithm>
using namespace std;

char ch, i;

int main(){

while(ch = getchar() && ch != EOF && ch != '\n' && i <= 100){
    if(ch == ',') printf(" ,");
    else if(ch != '-' && ch != '.') printf("%c", ch);
    i++;
}printf("\n");

return 0;
}