const int redLED = 13;
const int greenLED = 12;
const int blueLED = 11;
const int yellowLED = 10;

void setup() {
 pinMode(redLED, OUTPUT);
 pinMode(greenLED, OUTPUT);
 pinMode(blueLED, OUTPUT);
 pinMode(yellowLED, OUTPUT);
}

void loop() {
  for(int i=0;i<5;i++){
  digitalWrite(10, HIGH);
  digitalWrite(11, HIGH);
  digitalWrite(12, HIGH);
  digitalWrite(13, HIGH);
  delay(500);
  digitalWrite(10, LOW);
  digitalWrite(11, LOW);
  digitalWrite(12, LOW);
  digitalWrite(13, LOW);
  delay(500);
  }
  for(int i=0;i<5;i++){
  digitalWrite(10, HIGH);
  digitalWrite(11, HIGH);
  digitalWrite(12, HIGH);
  digitalWrite(13, LOW);
  delay(500);
  digitalWrite(10, LOW);
  digitalWrite(11, LOW);
  digitalWrite(12, LOW);
  digitalWrite(13, LOW);
  delay(500);
  }
  for(int i=0;i<5;i++){
  digitalWrite(10, HIGH);
  digitalWrite(11, HIGH);
  digitalWrite(12, LOW);
  digitalWrite(13, LOW);
  delay(500);
  digitalWrite(10, LOW);
  digitalWrite(11, LOW);
  digitalWrite(12, LOW);
  digitalWrite(13, LOW);
  delay(500);
  }
  for(int i=0;i<5;i++){
  digitalWrite(10, HIGH);
  digitalWrite(11, LOW);
  digitalWrite(12, LOW);
  digitalWrite(13, LOW);
  delay(500);
  digitalWrite(10, LOW);
  digitalWrite(11, LOW);
  digitalWrite(12, LOW);
  digitalWrite(13, LOW);
  delay(500);
  }
}