// Definindo os pinos dos LEDs
int led4 = 4;
int led0 = 0;
int led2 = 2;
int led14 = 14;
int led12 = 12;

void setup() {
  // Inicializando os pinos de saída
  pinMode(led4, OUTPUT);
  pinMode(led0, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led14, OUTPUT);
  pinMode(led12, OUTPUT);
}

void loop() {
  // Acendendo o semaforo
  digitalWrite(led12, HIGH);
  digitalWrite(led2, HIGH);
  delay(1000);
  digitalWrite(led2, LOW);
  delay(100);
  digitalWrite(led0, HIGH);
  delay(750);
  digitalWrite(led0, LOW);
  digitalWrite(led12, LOW);
  delay(100);
  digitalWrite(led14, HIGH);
  digitalWrite(led4, HIGH);
  delay(1000);
  digitalWrite(led14, LOW);
  digitalWrite(led4, LOW);
  delay(100);
}