int vr = 0;
void setup() {
  Serial.begin(9600);
  pinMode(A0, INPUT);
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
}
void loop() {
  vr = analogRead(A0);
  Serial.println(vr);
  delay(10);
  digitalWrite(2, HIGH);
  digitalWrite(8, HIGH);
  delay(vr);
  digitalWrite(2, LOW);
  digitalWrite(8, LOW);
  digitalWrite(3, HIGH);
  digitalWrite(9, HIGH);
  delay(vr);
  digitalWrite(3, LOW);
  digitalWrite(9, LOW);
  digitalWrite(4, HIGH);
  digitalWrite(10, HIGH);
  delay(vr);
  digitalWrite(4, LOW);
  digitalWrite(10, LOW);
  digitalWrite(5, HIGH);
  digitalWrite(11, HIGH);
  delay(vr);
  digitalWrite(5, LOW);
  digitalWrite(11, LOW);
  digitalWrite(6, HIGH);
  digitalWrite(12, HIGH);
  delay(vr);
  digitalWrite(6, LOW);
  digitalWrite(12, LOW);
}