// C++ code
//blue means yellow
int green1,red1,blue1;
int red2,green2,blue2;
int blue3,green3,red3;
int blue4,green4,red4;
void setup()
{
  green1=2;
  green2=5;
  green3=8;
  green4=11;
  red1=4;
  red2=7;
  red3=10;
  red4=13;
  blue1=3;
  blue2=6;
  blue3=9;
  blue4=12;
  pinMode(green1,OUTPUT);
  pinMode(red1, OUTPUT);
  pinMode(blue1, OUTPUT);
  pinMode(green2, OUTPUT);
  pinMode(red2, OUTPUT);
  pinMode(blue2, OUTPUT);
  pinMode(green3, OUTPUT);
  pinMode(red3, OUTPUT);
  pinMode(blue3, OUTPUT);
  pinMode(green4, OUTPUT);
  pinMode(red4, OUTPUT);
  pinMode(blue4, OUTPUT);
}

void loop()
{
  digitalWrite(red1, HIGH);
  digitalWrite(red2, HIGH);
  digitalWrite(green3, HIGH);
  digitalWrite(green4, HIGH);
  delay(1000); // Wait for 1000 millisecond(s)
  digitalWrite(red1,LOW);
  digitalWrite(red2,LOW);
  digitalWrite(green3,LOW);
  digitalWrite(green4,LOW);
  delay(1000); // Wait for 1000 millisecond(s)
   digitalWrite(blue1, HIGH);
  digitalWrite(blue2, HIGH);
  digitalWrite(blue3, HIGH);
  digitalWrite(blue4, HIGH);
  delay(1000); // Wait for 1000 millisecond(s)
  digitalWrite(blue1,LOW);
  digitalWrite(blue2,LOW);
  digitalWrite(blue3,LOW);
  digitalWrite(blue4,LOW);
  delay(1000); // Wait for 1000 millisecond(s)
  digitalWrite(red3,HIGH);
  digitalWrite(red4,HIGH);
  digitalWrite(green1,HIGH);
  digitalWrite(green2,HIGH);
  delay(1000); // Wait for 1000 millisecond(s)
  digitalWrite(red3,LOW);
  digitalWrite(red4,LOW);
  digitalWrite(green1,LOW);
  digitalWrite(green2,LOW);
  delay(1000); // Wait for 1000 millisecond(s)
}