#define RED1 1
#define YELLOW1 3
#define GREEN1 2
#define RED2 4
#define YELLOW2 5
#define GREEN2 6
#define RED3 16
#define YELLOW3 17
#define GREEN3 18
#define RED4 22
#define YELLOW4 26
#define GREEN4 27

void setup()
{
  pinMode(RED1, OUTPUT);
  pinMode(YELLOW1, OUTPUT);
  pinMode(GREEN1, OUTPUT);
  pinMode(RED2, OUTPUT);
  pinMode(YELLOW2, OUTPUT);
  pinMode(GREEN2, OUTPUT);
  pinMode(RED3, OUTPUT);
  pinMode(YELLOW3, OUTPUT);
  pinMode(GREEN3, OUTPUT);
  pinMode(RED4, OUTPUT);
  pinMode(YELLOW4, OUTPUT);
  pinMode(GREEN4, OUTPUT);
}

void loop()
{

  digitalWrite(GREEN1, HIGH);
  digitalWrite(GREEN2, LOW);
  digitalWrite(GREEN3, LOW);
  digitalWrite(GREEN4, LOW);
  digitalWrite(RED2, HIGH);
  digitalWrite(RED3, HIGH);
  digitalWrite(RED1, LOW);
  digitalWrite(RED4, HIGH);
  delay(5000);

  digitalWrite(GREEN1, LOW);
  digitalWrite(YELLOW1, HIGH);
  digitalWrite(YELLOW2, HIGH);
  digitalWrite(RED2, LOW);
  delay(3000);

  digitalWrite(YELLOW1, LOW);
  digitalWrite(YELLOW2, LOW);
  digitalWrite(RED1, HIGH);
  digitalWrite(RED3, HIGH);
  digitalWrite(RED4, HIGH);
  digitalWrite(GREEN1, LOW);
  digitalWrite(GREEN2, HIGH);
  digitalWrite(GREEN3, LOW);
  digitalWrite(GREEN4, LOW);
  delay(5000);

  digitalWrite(GREEN2, LOW);
  digitalWrite(YELLOW2, HIGH);
  digitalWrite(YELLOW3, HIGH);
  digitalWrite(RED3, LOW);
  delay(3000);

  digitalWrite(YELLOW2, LOW);
  digitalWrite(YELLOW3, LOW);
  digitalWrite(RED1, HIGH);
  digitalWrite(RED2, HIGH);
  digitalWrite(RED4, HIGH);
  digitalWrite(GREEN1, LOW);
  digitalWrite(GREEN3, HIGH);
  digitalWrite(GREEN2, LOW);
  digitalWrite(GREEN4, LOW);
  delay(5000);

  digitalWrite(GREEN3, LOW);
  digitalWrite(YELLOW3, HIGH);
  digitalWrite(YELLOW4, HIGH);
  digitalWrite(RED4, LOW);
  delay(3000);

  digitalWrite(YELLOW3, LOW);
  digitalWrite(YELLOW4, LOW);
  digitalWrite(RED1, HIGH);
  digitalWrite(RED2, HIGH);
  digitalWrite(RED3, HIGH);
  digitalWrite(GREEN1, LOW);
  digitalWrite(GREEN4, HIGH);
  digitalWrite(GREEN2, LOW);
  digitalWrite(GREEN3, LOW);
  delay(5000);

  digitalWrite(GREEN4, LOW);
  digitalWrite(YELLOW4, HIGH);
  digitalWrite(YELLOW1, HIGH);
  digitalWrite(RED1, LOW);
  delay(3000);
}