int LED1 = 2;
int LED2 = 4;

void setup() {
  // put your setup code here, to run once:
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  Serial.begin(9600);
  Serial.println("g'day pardner yeehaw (polite)");
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  for(int i = 0; i <= 10000; i = i+30) {
    digitalWrite(LED1, HIGH);
    delay(i);
    digitalWrite(LED1, LOW);
    delay(i);
    digitalWrite(LED2, HIGH);
    delay(i);
    digitalWrite(LED2, LOW);
    delay(i);
  }
}