#include <stdio.h>
#include <ctype.h>
int main()
{
    char s[200] = {};
    gets(s);
    char *p = s;
    char c = *p++;
    for (; *p;){
        putchar(c);
        if (isdigit(*p) && isalpha(c)){
            printf(" ");
        }
        c = *p++;
    }
    return 0;
}