#define LED_VERMELL 3
#define LED_GROC 2
#define LED_VERD 1

void setup() {

pinMode(LED_VERMELL, OUTPUT);
 pinMode(LED_GROC, OUTPUT);
 pinMode(LED_VERD, OUTPUT);
}

void loop() {

 
 digitalWrite(LED_GROC, LOW);
 digitalWrite(LED_VERD, HIGH);
 delay(1000);
 for(int i =1; i <= 5; i = i + 1) {
  digitalWrite(LED_GROC, HIGH);
 digitalWrite(LED_VERD, LOW);
 delay(900);
 
  digitalWrite(LED_GROC, HIGH);
 digitalWrite(LED_VERD, LOW);
 delay(900);
  }
}