void setup() {
  // put your setup code here, to run once:
pinMode(2,OUTPUT);
pinMode(7,OUTPUT);
pinMode(8, OUTPUT);
pinMode(1, OUTPUT);
pinMode(3, OUTPUT);
pinMode(5, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(2, HIGH);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(1, LOW);
digitalWrite(3, LOW);
digitalWrite(5, LOW);
delay(50);
digitalWrite(2, LOW);
digitalWrite(7, HIGH);
digitalWrite(8, LOW);
digitalWrite(1, LOW);
digitalWrite(3, LOW);
digitalWrite(5, LOW);
delay(80);
digitalWrite(2, LOW);
digitalWrite(7, LOW);
digitalWrite(8, HIGH);
digitalWrite(1, LOW);
digitalWrite(3, LOW);
digitalWrite(5, LOW);
delay(60);
digitalWrite(2, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(1, HIGH);
digitalWrite(3, LOW);
digitalWrite(5, LOW);
delay(100);
digitalWrite(2, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(1, LOW);
digitalWrite(3, HIGH);
digitalWrite(5, LOW);
delay(120);
digitalWrite(2, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(1, LOW);
digitalWrite(3, LOW);
digitalWrite(5, HIGH);
delay(140);
}