const int RED1_PIN = 1;
const int YELLOW1_PIN = 5;
const int GREEN1_PIN = 9;
const int RED2_PIN = 16;
const int YELLOW2_PIN = 17;
const int GREEN2_PIN = 18;
const int RED3_PIN = 26;
const int YELLOW3_PIN = 27;
const int GREEN3_PIN = 28;

void setup() {
  pinMode(RED1_PIN, OUTPUT);
  pinMode(YELLOW1_PIN, OUTPUT);
  pinMode(GREEN1_PIN, OUTPUT);
  pinMode(RED2_PIN, OUTPUT);
  pinMode(YELLOW2_PIN, OUTPUT);
  pinMode(GREEN2_PIN, OUTPUT);
  pinMode(RED3_PIN, OUTPUT);
  pinMode(YELLOW3_PIN, OUTPUT);
  pinMode(GREEN3_PIN, OUTPUT);
}
/////////////////////
void turnOnGreen1red2red3() {
  digitalWrite(GREEN1_PIN, HIGH);
  digitalWrite(YELLOW1_PIN, LOW);
  digitalWrite(RED1_PIN, LOW);
  digitalWrite(GREEN2_PIN, LOW);
  digitalWrite(YELLOW2_PIN, LOW);
  digitalWrite(RED2_PIN, HIGH);
  digitalWrite(GREEN3_PIN, LOW);
  digitalWrite(YELLOW3_PIN, LOW);
  digitalWrite(RED3_PIN, HIGH);
}

void turnOnYellow1yellow2yellow3() {
  digitalWrite(GREEN1_PIN, LOW);
  digitalWrite(YELLOW1_PIN, HIGH);
  digitalWrite(RED1_PIN, LOW);
  digitalWrite(GREEN2_PIN, LOW);
  digitalWrite(YELLOW2_PIN, HIGH);
  digitalWrite(RED2_PIN, LOW);
  digitalWrite(GREEN3_PIN, LOW);
  digitalWrite(YELLOW3_PIN, HIGH);
  digitalWrite(RED3_PIN, LOW);
}

void turnOnGreen2red1red3() {
  digitalWrite(GREEN1_PIN, LOW);
  digitalWrite(YELLOW1_PIN, LOW);
  digitalWrite(RED1_PIN, HIGH);
  digitalWrite(GREEN2_PIN, HIGH);
  digitalWrite(YELLOW2_PIN, LOW);
  digitalWrite(RED2_PIN, LOW);
  digitalWrite(GREEN3_PIN, LOW);
  digitalWrite(YELLOW3_PIN, LOW);
  digitalWrite(RED3_PIN, HIGH);
}

void turnOnGreen3red1red2() {
  digitalWrite(GREEN1_PIN, LOW);
  digitalWrite(YELLOW1_PIN, LOW);
  digitalWrite(RED1_PIN, HIGH);
  digitalWrite(GREEN2_PIN, LOW);
  digitalWrite(YELLOW2_PIN, LOW);
  digitalWrite(RED2_PIN, HIGH);
  digitalWrite(GREEN3_PIN, HIGH);
  digitalWrite(YELLOW3_PIN, LOW);
  digitalWrite(RED3_PIN, LOW);
}



////////////////////////////////


void loop() {
  turnOnGreen1red2red3();
  delay(5000);

  turnOnYellow1yellow2yellow3();
  delay(5000);

  turnOnGreen2red1red3();
  delay(5000);

  turnOnYellow1yellow2yellow3();
  delay(5000);

  turnOnGreen3red1red2();
  delay(5000);

  turnOnYellow1yellow2yellow3();
  delay(5000);

}