void setup()
{

  DDRB |= (1 << DDB1); 
  DDRD |= (1 << DDD6);
}

void loop()
{
 
  PORTB |= (1 << PORTB1); 
  delay(50); 
  PORTB &= ~(1 << PORTB1); 
  delay(500);
  
 
  PORTD |= (1 << PORTD6); 
  delay(50); 
  PORTD &= ~(1 << PORTD6); 
  delay(450); 
}