#include <unistd.h>

int my_print_comb(void)
{
    int a = 48;
    int b = 49;
    int c = 50;

    while (a!=56){
        while (b!=57){
            while (c!=58){
              write(1, &a, 1);
              write(1, &b, 1);
              write(1, &c, 1);
              if (a==55)
                  write(1, &"\n", 1);
              else
                  write(1, ", ", 2);
              c=c+1;
            }
            b=b+1;
            c=b+1;
        }
        b=a+1;
        a=a+1;
    }
}


int main()
{
  my_print_comb();
}