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

char c[101], ch;

int main(){

for(int i = 0; i < 100; i++){
    c[i] = getchar();
}

for(int i = 0; i < 100; i++){
    ch = c[i];
    if(ch=='\0' || ch=='\n' || ch == EOF) break;
    if(ch == ',') printf(" ,");
    else if(ch != '-' && ch != '.') printf("%c", ch);
}

return 0;
}