#define LED1 2
#define LED2 3
#define GREEN 4


void setup() {
  // put your setup code here, to run once:
    pinMode(LED1, OUTPUT);
    pinMode(LED2, OUTPUT);
    pinMode(GREEN, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(LED1, HIGH);
  digitalWrite(LED2, LOW);
  digitalWrite(GREEN, HIGH);

  delay(250);
  digitalWrite(LED1, LOW);
  digitalWrite(LED2, HIGH);
  digitalWrite(GREEN, LOW);
  delay(250);

}