const int GREEN_PIN_1 = 12;
const int GREEN_PIN_2 = 13;
const int YELLOW_PIN_1 = 10;
const int YELLOW_PIN_2 = 11;
const int RED_PIN_1 = 8;
const int RED_PIN_2 = 9;

const int WAKTU_JEDA = 200;

void setup() {
  // put your setup code here, to run once:
  pinMode(RED_PIN_1, OUTPUT);
  pinMode(RED_PIN_2, OUTPUT);
  pinMode(YELLOW_PIN_1, OUTPUT);
  pinMode(YELLOW_PIN_2, OUTPUT);
  pinMode(GREEN_PIN_1, OUTPUT);
  pinMode(GREEN_PIN_2, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(RED_PIN_1, HIGH); //5v
  digitalWrite(RED_PIN_2, LOW); //0v
  digitalWrite(YELLOW_PIN_1, LOW); //0v
  digitalWrite(YELLOW_PIN_2, LOW); //0v
  digitalWrite(GREEN_PIN_1, LOW); //5v
  digitalWrite(GREEN_PIN_2, HIGH); //0v
  delay(WAKTU_JEDA); //ms
  digitalWrite(RED_PIN_1, LOW); //5v
  digitalWrite(RED_PIN_2, HIGH); //0v
  digitalWrite(YELLOW_PIN_1, LOW); //0v
  digitalWrite(YELLOW_PIN_2, LOW); //0v
  digitalWrite(GREEN_PIN_1, HIGH); //5v
  digitalWrite(GREEN_PIN_2, LOW); //0v
  delay(WAKTU_JEDA);
  digitalWrite(RED_PIN_1, LOW); //5v
  digitalWrite(RED_PIN_2, LOW); //0v
  digitalWrite(YELLOW_PIN_1, HIGH); //0v
  digitalWrite(YELLOW_PIN_2, HIGH); //0v
  digitalWrite(GREEN_PIN_1, LOW); //5v
  digitalWrite(GREEN_PIN_2, LOW); //0v
  delay(WAKTU_JEDA);
  digitalWrite(RED_PIN_1, LOW); //5v
  digitalWrite(RED_PIN_2, HIGH); //0v
  digitalWrite(YELLOW_PIN_1, LOW); //0v
  digitalWrite(YELLOW_PIN_2, LOW); //0v
  digitalWrite(GREEN_PIN_1, HIGH); //5v
  digitalWrite(GREEN_PIN_2, LOW); //0v
  delay(WAKTU_JEDA);
}