void setup() {
  pinMode(5,OUTPUT);
  pinMode(6,OUTPUT);
  pinMode(7,OUTPUT);
  pinMode(8,OUTPUT);
  pinMode(9,OUTPUT);
  pinMode(10,OUTPUT);
  pinMode(11,OUTPUT);
  pinMode(12,OUTPUT);
  pinMode(13,OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(1, OUTPUT);
}

void loop() {
  a();
  b();
  c();
  e();
}

void e() {
  digitalWrite(7, HIGH);
  digitalWrite(10, HIGH);
  digitalWrite(13, HIGH);
}

void a() {
  digitalWrite(13, LOW);
  digitalWrite(12, HIGH);
  delay(500);
  digitalWrite(12, LOW);
  digitalWrite(11, HIGH);
  delay(500);
  digitalWrite(11, LOW);
  digitalWrite(13, HIGH);
  delay(500);
}

void b() {
  digitalWrite(10, LOW);
  digitalWrite(9, HIGH);
  delay(500);
  digitalWrite(9, LOW);
  digitalWrite(2, HIGH);
  digitalWrite(8, HIGH);
  delay(500);
  digitalWrite(8, LOW);
  digitalWrite(2, LOW);
  digitalWrite(10, HIGH);
  delay(500);
}

void c() {
  digitalWrite(7, LOW);
  digitalWrite(6, HIGH);
  delay(500);
  digitalWrite(6, LOW);
  digitalWrite(5, HIGH);
  digitalWrite(1, HIGH);
  delay(500);
  digitalWrite(5, LOW);
  digitalWrite(1, LOW);
  digitalWrite(7, HIGH);
  delay(500);
}