int RED = 15;
int GREEN = 2;
int WHITE = 0;
void setup() {
pinMode(RED, OUTPUT);
pinMode(GREEN, OUTPUT);
pinMode(WHITE, OUTPUT);
}

void loop() {
  digitalWrite (RED, HIGH);
  delay(1000);
  digitalWrite (GREEN, HIGH);
  delay(1000);
  digitalWrite (WHITE, HIGH);
  delay(1000);
  digitalWrite (WHITE, LOW);
  delay(1000);
  digitalWrite (GREEN, LOW);
  delay(1000);
  digitalWrite (RED, LOW);
  delay(1000);
}