const int redLED = 25;
const int blueLED = 26;
const int D1 =50;

void setup() {
  // Set LED pins as output
  pinMode(redLED, OUTPUT);
  pinMode(blueLED, OUTPUT);
}

void loop() {
  //blue
  digitalWrite(blueLED, HIGH);
  delay(D1);
  digitalWrite(blueLED, LOW);
  delay(D1);
  digitalWrite(blueLED, HIGH);
  delay(D1);
  digitalWrite(blueLED, LOW);
  delay(D1);
  digitalWrite(blueLED, HIGH);
  delay(D1);
  digitalWrite(blueLED, LOW);
  delay(D1);
  digitalWrite(blueLED, HIGH);
  delay(D1);
  digitalWrite(blueLED, LOW);
  delay(D1);

  //red
  digitalWrite(redLED, HIGH);
  delay(D1);
  digitalWrite(redLED, LOW);
  delay(D1);
  digitalWrite(redLED, HIGH);
  delay(D1);
  digitalWrite(redLED, LOW);
  delay(D1);
  digitalWrite(redLED, HIGH);
  delay(D1);
  digitalWrite(redLED, LOW);
  delay(D1);
  digitalWrite(redLED, HIGH);
  delay(D1);
  digitalWrite(redLED, LOW);
  delay(D1);
}