int merah=13;
int kuning=12;
int hijau=11;
int merah2=10;
int kuning2=9;
int hijau2=8;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
pinMode(merah, OUTPUT);
pinMode(merah2, OUTPUT);

pinMode(kuning, OUTPUT);
pinMode(kuning2, OUTPUT);

pinMode(hijau, OUTPUT);
pinMode(hijau2, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(merah, HIGH );
digitalWrite(kuning, LOW);
digitalWrite(hijau, LOW);
digitalWrite(merah2, LOW);
digitalWrite(kuning2, LOW);
digitalWrite(hijau2, HIGH);
delay(5000);
digitalWrite(merah, LOW );
digitalWrite(kuning, HIGH);
digitalWrite(hijau, LOW);
digitalWrite(merah2, LOW);
digitalWrite(kuning2, HIGH);
digitalWrite(hijau2, LOW);
delay(2000);
digitalWrite(merah, LOW );
digitalWrite(kuning, LOW);
digitalWrite(hijau, HIGH);
digitalWrite(merah2, HIGH);
digitalWrite(kuning2, LOW);
digitalWrite(hijau2, LOW);
delay(5000);
digitalWrite(merah, LOW );
digitalWrite(kuning, HIGH);
digitalWrite(hijau, LOW);
digitalWrite(merah2, LOW);
digitalWrite(kuning2, HIGH);
digitalWrite(hijau2, LOW);
delay(2000);
}