int counter;
void setup() {
  for (int i=2; i<9; i++) {
    pinMode(i, OUTPUT);
  }
  pinMode(10, INPUT_PULLUP);
  pinMode(11, INPUT_PULLUP);
  counter = 0;
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:

  if (digitalRead(10) == LOW) {
    counter++;
    delay(250);
    Serial.println("counter up");
  }

  if (digitalRead(11) == LOW) {
    counter--;
    delay(250);
    Serial.println("counter down");
  }

  if (counter == 0) {
    digitalWrite( 2  , LOW);
    digitalWrite(  3 , LOW);
    digitalWrite( 4  , LOW);
    digitalWrite( 5  , LOW);
    digitalWrite( 6  , LOW);
    digitalWrite(  7 , LOW);
    digitalWrite( 8  , LOW);
    digitalWrite(3   , HIGH);
    digitalWrite(  4 , HIGH);
    digitalWrite( 5  , HIGH);
    digitalWrite( 6  , HIGH);
    digitalWrite(  7 , HIGH);
    digitalWrite(  2 , HIGH);
  }
  if (counter == 1) {
    digitalWrite( 2  , LOW);
    digitalWrite(  3 , LOW);
    digitalWrite( 4  , LOW);
    digitalWrite( 5  , LOW);
    digitalWrite( 6  , LOW);
    digitalWrite(  7 , LOW);
    digitalWrite( 8  , LOW);
    digitalWrite(3, HIGH);
    digitalWrite(4, HIGH);
  }
  if (counter == 2) {
    digitalWrite( 2  , LOW);
    digitalWrite(  3 , LOW);
    digitalWrite( 4  , LOW);
    digitalWrite( 5  , LOW);
    digitalWrite( 6  , LOW);
    digitalWrite(  7 , LOW);
    digitalWrite( 8  , LOW);
    digitalWrite(3, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(2, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
  }

  if (counter == 3) {
    digitalWrite( 2  , LOW);
    digitalWrite(  3 , LOW);
    digitalWrite( 4  , LOW);
    digitalWrite( 5  , LOW);
    digitalWrite( 6  , LOW);
    digitalWrite(  7 , LOW);
    digitalWrite( 8  , LOW);
    digitalWrite(3, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(2, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(4, HIGH);
  }

  if (counter == 4) {
    digitalWrite( 2  , LOW);
    digitalWrite(  3 , LOW);
    digitalWrite( 4  , LOW);
    digitalWrite( 5  , LOW);
    digitalWrite( 6  , LOW);
    digitalWrite(  7 , LOW);
    digitalWrite( 8  , LOW);
    digitalWrite(3, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(4, HIGH);
    digitalWrite(7, HIGH);
    
  }

  if (counter == 5 ) {
    digitalWrite( 2  , HIGH);
    digitalWrite(  3 , LOW);
    digitalWrite( 4  , LOW);
    digitalWrite( 5  , LOW);
    digitalWrite( 6  , LOW);
    digitalWrite(  7 , HIGH);
    digitalWrite( 8  , HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(4, HIGH);
  }
  if (counter == 6) {
    digitalWrite( 2  , LOW);
    digitalWrite(  3 , LOW);
    digitalWrite( 4  , LOW);
    digitalWrite( 5  , LOW);
    digitalWrite( 6  , LOW);
    digitalWrite(  7 , LOW);
    digitalWrite( 8  , LOW);
    digitalWrite(2, HIGH);
    digitalWrite(7, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(4, HIGH);
    digitalWrite(6, HIGH);
  }
  if (counter == 7) {
    digitalWrite( 2  , LOW);
    digitalWrite(  3 , HIGH);
    digitalWrite( 4  , LOW);
    digitalWrite( 5  , LOW);
    digitalWrite( 6  , LOW);
    digitalWrite(  7 , LOW);
    digitalWrite( 8  , LOW);
    digitalWrite(4, HIGH);
    digitalWrite(2, HIGH);
  }

  if (counter == 8) {
    digitalWrite( 2  , LOW);
    digitalWrite(  3 , LOW);
    digitalWrite( 4  , LOW);
    digitalWrite( 5  , LOW);
    digitalWrite( 6  , LOW);
    digitalWrite(  7 , LOW);
    digitalWrite( 8  , LOW);
    digitalWrite(2, HIGH);
    digitalWrite(7, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(4, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(3, HIGH);
  }
  if (counter == 9) {
    digitalWrite( 2  , LOW);
    digitalWrite(  3 , LOW);
    digitalWrite( 4  , LOW);
    digitalWrite( 5  , LOW);
    digitalWrite( 6  , LOW);
    digitalWrite(  7 , LOW);
    digitalWrite( 8  , LOW);
    digitalWrite(2, HIGH);
    digitalWrite(7, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(4, HIGH);
    digitalWrite(3, HIGH);
  }
  
}