void setup() {

  for (int i = 2; i <= 8; i++)
  {
    pinMode(i, OUTPUT);
  }

}

void loop() {

  digitalWrite(4, HIGH);
  digitalWrite(4, LOW);
  delay(500);

  digitalWrite(5, HIGH);
  digitalWrite(5, LOW);
  delay(500);

  digitalWrite(2, HIGH);
  digitalWrite(2, LOW);
  delay(500);

  digitalWrite(6, HIGH);
  digitalWrite(6, LOW);
  delay(500);

  digitalWrite(7, HIGH);
  digitalWrite(7, LOW);
  delay(500);

  digitalWrite(8, HIGH);
  digitalWrite(8, LOW);
  delay(500);
  
  digitalWrite(2, HIGH);
  digitalWrite(2, LOW);
  delay(500);

  digitalWrite(3, HIGH);
  digitalWrite(3, LOW);
  delay(500);
  
  

}




// 2 = G
// 3 = F
// 4 = A
// 5 = B
// 6 = E
// 7 = D
// 8 = C

// A B G E D C G F