const int ledVermelho = 9;
const int ledAmarelo = 10;
const int ledVerde = 11;

void setup() {
    pinMode(ledVErmelho, OUTPUT);
    pinMode(ledAmarelo, OUTPUT);
    pinMode(ledVerde, OUTPUT);
}

void loop() {
    digitalWrite(ledVerde, HIGH);
    delay(5000);
    digitalWrite(ledVerde, LOW)

    digitalWrite(leedAmarelo, HIGH);
    delay(2000);
    digitalWrite(ledAmarelo, LOW);

    digitalWrite(ledVermelho,HIGH);
    delay(5000);
    digitalWrite(ledVermelho, LOW);
    }