int x = 9;

unsigned long myTime;

void setup() {
  Serial.begin(115200);
  pinMode(7, OUTPUT);
  pinMode(8, INPUT_PULLUP);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);
}
void loop() {

  ledPin(x);
  x = x+1;
  if(x==14){
    x=9;
  }
}
void ledPin(int pin) {
  digitalWrite(pin, HIGH);
  delay(200);
  digitalWrite(pin, LOW);
  delay(200);
}