void setup(){
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, INPUT);
  pinMode(12, INPUT);
}
void loop() {
  if(digitalRead(11) == LOW);
  digitalWrite(5,HIGH);  //apaga o led vermelho (sinal 1)
  digitalWrite(7,LOW); //acende o led verde (sinal 1)
  digitalWrite(8,LOW); //acende o led vermelho (sinal 2)
  delay(4000);          //espera 4 segundos
  digitalWrite(7,HIGH);  //apaga o led verde (sinal 1)

  digitalWrite(6,LOW);//acende o led amarelo (sinal 1)
  delay(2000);          //espera 2 segundos
  digitalWrite(6,HIGH);  //apaga o led amarelo (sinal 1)

  digitalWrite(5,LOW); //acende o led vermelho (sinal 1)
  digitalWrite(8,HIGH);  //apaga o led vermelho (sinal 2)
  digitalWrite(10,LOW); //acende o led verde (sinal 2)
  delay(4000);          //espera 4 segundos
  digitalWrite(10,HIGH); //apaga o led verde (sinal 2)

  digitalWrite(9,LOW); //acende o led amarelo (sinal 2)
  delay(2000);          //espera 2 segundos
  digitalWrite(9,HIGH);  //apaga o led amarelo (sinal 2)
}