#define LED 9
#define LED 10
#define LED 11
void setup() {
  
  pinMode(verdePin, OUTPUT);
  pinMode(gialloPin, OUTPUT);
  pinMode(rossoPin, OUTPUT);
}

void loop() {
 
  digitalWrite(verdePin, HIGH);
  digitalWrite(gialloPin, LOW);
  digitalWrite(rossoPin, LOW);
  delay(3000);

  
  digitalWrite(verdePin, LOW);
  digitalWrite(gialloPin, HIGH);
  digitalWrite(rossoPin, LOW);
  delay(1000);


  digitalWrite(verdePin, LOW);
  digitalWrite(gialloPin, LOW);
  digitalWrite(rossoPin, HIGH);
  delay(4000);
}