#define RED 9
#define GREEN 10
#define BLUE 11
void setup()
{
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
}

void loop()
{
  digitalWrite(9, 1);
  delay(1000);
  digitalWrite(9,0);
  digitalWrite(10,1);
  delay(1000);
  digitalWrite(10,0);
  digitalWrite(11,1);
delay(1000);
digitalWrite(11,0);

}