#define RED 1
#define BLUE 5
#define YELLOW 9
void setup() {
  // put your setup code here, to run once:
  pinMode(RED, OUTPUT);
  pinMode(BLUE, OUTPUT);
  pinMode(YELLOW, OUTPUT);
}

void loop() {
  digitalWrite(RED, HIGH);
  delay(3000);
  digitalWrite(RED, LOW);
  digitalWrite(BLUE, HIGH);
  delay(500);
  digitalWrite(BLUE, LOW);
  digitalWrite(YELLOW, HIGH);
  delay(2000);
  digitalWrite(YELLOW, LOW);
  delay(500);
}