int oneled = 2;
int twoled = 3;
int threeled = 4;
void setup() {
  pinMode(oneled,1);
  pinMode(twoled,1);
  pinMode(threeled,1);
}
void loop() {
  digitalWrite(oneled, HIGH);
  delay(500);
  digitalWrite(oneled, LOW);
  digitalWrite(twoled, HIGH);
  delay(500);
  digitalWrite(oneled, HIGH);
  digitalWrite(twoled, HIGH);
  delay(200);
  digitalWrite(twoled, LOW);
  digitalWrite(threeled, HIGH);
  delay(300);
  digitalWrite(oneled, LOW);
  digitalWrite(threeled,HIGH);
  delay(400);
  digitalWrite(twoled, HIGH);
  digitalWrite(threeled,HIGH);
  delay(100);
  digitalWrite(oneled, HIGH);
  digitalWrite(twoled, HIGH);
  digitalWrite(threeled,HIGH);
  delay(100);
  digitalWrite(oneled, HIGH);
  digitalWrite(twoled, HIGH);
  digitalWrite(threeled,LOW);
  delay(200);
  digitalWrite(oneled, LOW);
  digitalWrite(twoled, HIGH);
  delay(300);
  digitalWrite(twoled, LOW);
}