#include "header.h"
void setup() {
  // put your setup code here, to run once:
  port();
}

void loop() {
  // put your main code here, to run repeatedly:
  char x=1,sum=0;
  volatile long i;
  for(x=7;x>=4;x--)
  {
    
    sum=power(2,x)+power(2,x-4);
    output(sum);
    
    for(i=0;i<600000;i++);
  }
}