void setup() {
  pinMode(0, OUTPUT);
pinMode(1, OUTPUT);
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);

}

void loop() {
 digitalWrite(0, HIGH);
 delay(330);
 digitalWrite(0, LOW);
 delay(300);
 digitalWrite(1, HIGH);
 delay(330);
digitalWrite(1, LOW);
delay(300);
digitalWrite(2, HIGH);
delay(150);
digitalWrite(2, LOW);
delay(150);
digitalWrite(3, HIGH);
delay(100);
digitalWrite(3, LOW);
delay(100);


}