int merah1 = 13;
int merah2 = 10;
int merah3 = 7;
int merah4 = 2;
int kuning1 = 12;
int kuning2 = 9;
int kuning3 = 6;
int kuning4 = 3;
int hijau1 = 11;
int hijau2 = 8;
int hijau3 = 5;
int hijau4 = 4;

void setup() {
  // put your setup code here, to run once:
pinMode(merah1, OUTPUT);
pinMode(merah2, OUTPUT);
pinMode(merah3, OUTPUT);
pinMode(merah4, OUTPUT);
pinMode(kuning1, OUTPUT);
pinMode(kuning2, OUTPUT);
pinMode(kuning3, OUTPUT);
pinMode(kuning4, OUTPUT);
pinMode(hijau1, OUTPUT);
pinMode(hijau2, OUTPUT);
pinMode(hijau3, OUTPUT);
pinMode(hijau4, OUTPUT);
digitalWrite(merah1, HIGH);
digitalWrite(merah2, HIGH);
digitalWrite(merah3, HIGH);
digitalWrite(merah4, HIGH);
}

void loop() {
lampu_pertama();
lampu_kedua();
lampu_ketiga();
lampu_keempat();
}
void lampu_pertama(){
digitalWrite(merah1, LOW);
digitalWrite(kuning1, HIGH);
delay(1000);
digitalWrite(kuning1, LOW);
digitalWrite(hijau1, HIGH);
delay(5000);
digitalWrite(hijau1, LOW); 
digitalWrite(kuning1, HIGH);
delay(1000);
digitalWrite(kuning1, LOW);
digitalWrite(merah1, HIGH); 
}
void lampu_kedua(){

digitalWrite(merah2, LOW);
digitalWrite(kuning2, HIGH);
delay(1000);
digitalWrite(kuning2, LOW);
digitalWrite(hijau2, HIGH);
delay(5000);
digitalWrite(hijau2, LOW); 
digitalWrite(kuning2, HIGH);
delay(1000);
digitalWrite(kuning2, LOW);
digitalWrite(merah2, HIGH);
}
void lampu_ketiga(){

digitalWrite(merah3, LOW);
digitalWrite(kuning3, HIGH);
delay(1000);
digitalWrite(kuning3, LOW);
digitalWrite(hijau3, HIGH);
delay(5000);
digitalWrite(hijau3, LOW); 
digitalWrite(kuning3, HIGH);
delay(1000);
digitalWrite(kuning3, LOW);
digitalWrite(merah3, HIGH);  
}
void lampu_keempat(){

digitalWrite(merah4, LOW);
digitalWrite(kuning4, HIGH);
delay(1000);
digitalWrite(kuning4, LOW);
digitalWrite(hijau4, HIGH);
delay(5000);
digitalWrite(hijau4, LOW); 
digitalWrite(kuning4, HIGH);
delay(1000);
digitalWrite(kuning4, LOW);
digitalWrite(merah4, HIGH);
}