void setup() 
{
  pinMode(13,OUTPUT);
  pinMode(12,OUTPUT);
}

void loop() 
{
 
   digitalWrite(13, LOW);
  
   for(int x=0;x<200;x++)
   {
        digitalWrite(12, HIGH);
        delay(5);
        digitalWrite(12, LOW);
        delay(5);
     
   } 

  digitalWrite(13, HIGH);
  
   for(int x=0;x<200;x++)
   {
        digitalWrite(12, HIGH);
        delay(5);
        digitalWrite(12, LOW);
        delay(5);
   } 


}