boolean buttonWasUp = true;
boolean ledEnabled = false;
 
 void setup() {
  pinMode(4, OUTPUT);
  pinMode(3, INPUT_PULLUP);
  pinMode(0, OUTPUT);
  pinMode(1, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);
}

void loop() {
  a();
  c();
  b();
  d();
}
void a() {
  digitalWrite(13, HIGH);
  digitalWrite(9, HIGH);
  digitalWrite(0, HIGH);
}
void b() {
  digitalWrite(9, LOW);
  digitalWrite(10, HIGH);
  delay(1500);
  digitalWrite(10, LOW);
  digitalWrite(11, HIGH);
  delay(2500);
  digitalWrite(11, LOW);
  digitalWrite(10, HIGH);
  delay(1500);
  digitalWrite(10, LOW);
  digitalWrite(9, HIGH);
  delay(800);
}
void c() {
  digitalWrite(0, LOW);
  digitalWrite(1, HIGH);
  delay(1500);
  digitalWrite(1, LOW);
  digitalWrite(2, HIGH);
  delay(2500);
  digitalWrite(2, LOW);
  digitalWrite(1, HIGH);
  delay(1500);
  digitalWrite(1, LOW);
  digitalWrite(0, HIGH);
  delay(800);
}
void d() {
  digitalWrite(13, LOW);
  digitalWrite(12, HIGH);
  delay(2500);
  digitalWrite(12, LOW);
  digitalWrite(13, HIGH);
}