void setup() {
  // put your setup code here, to run once:
pinMode(4, OUTPUT);
pinMode(3, OUTPUT);
pinMode(5, OUTPUT);
pinMode(13, OUTPUT);
pinMode(12, OUTPUT);
pinMode(9, OUTPUT);
pinMode(8, OUTPUT);


}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(4, HIGH);
delay(50);
digitalWrite(3, HIGH);
delay(100);
digitalWrite(5, HIGH);
delay(150);
digitalWrite(13, HIGH);
delay(200);
digitalWrite(12, HIGH);
delay(250);
digitalWrite(8, HIGH);
delay(300);
digitalWrite(9, HIGH);
delay(350);
digitalWrite(4, LOW);
delay(350);
digitalWrite(3, LOW);
delay(300);
digitalWrite(5, LOW);
delay(250);
digitalWrite(13, LOW);
delay(200);
digitalWrite(12, LOW);
delay(150);
digitalWrite(8, LOW);
delay(100);
digitalWrite(9, LOW);
delay(50);





}