int biru =11;
int merah =7;
int biru2 =12;
int merah2 =6;
int biru3 =13;
int merah3 =5;

void setup() {
  // put your setup code here, to run once:
pinMode(biru, OUTPUT);
pinMode(merah, OUTPUT);
pinMode(biru2, OUTPUT);
pinMode(merah2, OUTPUT);
pinMode(biru3, OUTPUT);
pinMode(merah3, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(biru, HIGH);
delay(500);
digitalWrite(biru, LOW);
digitalWrite(merah, HIGH);
delay(500);
digitalWrite(merah, LOW);
digitalWrite(biru2, HIGH);
delay(500);
digitalWrite(biru2, LOW);
digitalWrite(merah2, HIGH);
delay(500);
digitalWrite(merah2, LOW);
delay(500);
digitalWrite(biru3, HIGH);
delay(500);
digitalWrite(biru3, LOW);
digitalWrite(merah3, HIGH);
delay(500);
digitalWrite(merah3, LOW);

}