int green1 = 2;
int yellow1 = 3;
int red1 = 4;
int green2 = 5;
int yellow2 = 6;
int red2 = 7;
int green3 = 8;
int yellow3 = 9;
int red3 = 10;
int green4 = 11;
int yellow4 = 12;
int red4 = 13;

const unsigned long Duration1 = 1000;
const unsigned long Duration2 = 250;

void setup() {
  pinMode(green1, OUTPUT);
  pinMode(yellow1, OUTPUT);
  pinMode(red1, OUTPUT);
  pinMode(green2, OUTPUT);
  pinMode(yellow2, OUTPUT);
  pinMode(red2, OUTPUT);
  pinMode(green3, OUTPUT);
  pinMode(yellow3, OUTPUT);
  pinMode(red3, OUTPUT);
  pinMode(green4, OUTPUT);
  pinMode(yellow4, OUTPUT);
  pinMode(red4, OUTPUT);
}

void loop() {

  digitalWrite(green1, HIGH);
  digitalWrite(green4, HIGH);
  digitalWrite(red2, HIGH);
  digitalWrite(red3, HIGH);
  delay(Duration1);
  digitalWrite(green1, LOW);
  digitalWrite(green4, LOW);
  digitalWrite(red2, LOW);
  digitalWrite(red3, LOW);
  delay(Duration2);

  digitalWrite(yellow1, HIGH);
  digitalWrite(yellow2, HIGH);
  digitalWrite(yellow3, HIGH);
  digitalWrite(yellow4, HIGH);
  delay(Duration1);
  digitalWrite(yellow1, LOW);
  digitalWrite(yellow2, LOW);
  digitalWrite(yellow3, LOW);
  digitalWrite(yellow4, LOW);
  delay(Duration2);

  digitalWrite(green2, HIGH);
  digitalWrite(green3, HIGH);
  digitalWrite(red1, HIGH);
  digitalWrite(red4, HIGH);
  delay(Duration1);
  digitalWrite(green2, LOW);
  digitalWrite(green3, LOW);
  digitalWrite(red1, LOW);
  digitalWrite(red4, LOW);
  delay(Duration2);

  digitalWrite(yellow1, HIGH);
  digitalWrite(yellow2, HIGH);
  digitalWrite(yellow3, HIGH);
  digitalWrite(yellow4, HIGH);
  delay(Duration1);
  digitalWrite(yellow1, LOW);
  digitalWrite(yellow2, LOW);
  digitalWrite(yellow3, LOW);
  digitalWrite(yellow4, LOW);
  delay(Duration2);

}