int pin2 = 2;
int pin3 = 3;

void setup() {
  pinMode(pin2, OUTPUT);
  pinMode(pin3, OUTPUT);
}

void loop() {
  blink(pin2, 3);
  delay(50);  // Delay between patterns
  blink(pin3, 3);
  delay(50);  // Delay between patterns
}

void blink(int pin, int times) {
  for (int i = 0; i < times; i++) {
    digitalWrite(pin, HIGH);
    delay(80);  // ON time
    digitalWrite(pin, LOW);
    delay(80);  // OFF time
  }
}