int red = 11;
int blue = 12;
int green = 13;


void setup() 
  // put your setup code here, to run once:
{
pinMode(red, OUTPUT);
pinMode(blue, OUTPUT);
pinMode(green, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(red, HIGH);
digitalWrite(blue, LOW);
digitalWrite(green, LOW);
delay(1500);

digitalWrite(red, LOW);
digitalWrite(blue, HIGH);
digitalWrite(green, LOW);
delay(1500);

digitalWrite(red, LOW);
digitalWrite(blue, LOW);
digitalWrite(green, HIGH);
delay(1500);

digitalWrite(red, LOW);
digitalWrite(blue, LOW);
digitalWrite(green, LOW);
delay(1500);

digitalWrite(red, HIGH);
digitalWrite(blue, HIGH);
digitalWrite(green, HIGH);
delay(1500);
}