//Chaser
void setup () {
  pinMode(2,OUTPUT);
  pinMode(3,OUTPUT);
  pinMode(4,OUTPUT);
  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);
}
void loop () {
  //#1
    digitalWrite(13,HIGH);
  delay(1000);
    digitalWrite(12,HIGH);
  delay(1000);
    digitalWrite(11,HIGH);
  delay(1000);
    digitalWrite(10,HIGH);
  delay(1000);
    digitalWrite(9,HIGH);
  delay(1000);
    digitalWrite(8,HIGH);
  delay(1000);
    digitalWrite(7,HIGH);
  delay(1000);
    digitalWrite(6,HIGH);
  delay(1000);
      digitalWrite(5,HIGH);
  delay(1000);
      digitalWrite(4,HIGH);
  delay(1000);
      digitalWrite(3,HIGH);
  delay(1000);
      digitalWrite(2,HIGH);
  delay(1000);
      digitalWrite(2,LOW);
  delay(1000);
      digitalWrite(3,LOW);
  delay(1000);
      digitalWrite(4,LOW);
  delay(1000);
      digitalWrite(5,LOW);
  delay(1000);
      digitalWrite(6,LOW);
  delay(1000);
      digitalWrite(7,LOW);  
  delay(1000);
      digitalWrite(8,LOW);       
  delay(1000);
      digitalWrite(9,LOW);  
  delay(1000);
      digitalWrite(10,LOW); 
  delay(1000);
      digitalWrite(11,LOW);  
  delay(1000);
      digitalWrite(12,LOW);   
  delay(1000);
      digitalWrite(13,LOW);       
  delay(1000);
  //#2
      digitalWrite(7,HIGH);
  delay(1000);
      digitalWrite(6,HIGH);
      digitalWrite(8,HIGH);
  delay(1000);
      digitalWrite(5,HIGH);
      digitalWrite(9,HIGH);
  delay(1000);
      digitalWrite(4,HIGH);
      digitalWrite(10,HIGH);
  delay(1000);
      digitalWrite(3,HIGH);
      digitalWrite(11,HIGH);
  delay(1000);
      digitalWrite(2,HIGH);
      digitalWrite(12,HIGH);
  delay(1000);
      digitalWrite(2,LOW);
      digitalWrite(3,LOW);
      digitalWrite(4,LOW);
      digitalWrite(5,LOW);
      digitalWrite(6,LOW);
      digitalWrite(7,LOW);
      digitalWrite(8,LOW);
      digitalWrite(9,LOW);
      digitalWrite(10,LOW);
      digitalWrite(11,LOW);
      digitalWrite(12,LOW);
      digitalWrite(13,LOW);
  delay(100);
  //#3
      digitalWrite(13,HIGH);
      digitalWrite(12,HIGH);
  delay(1000);
    digitalWrite(12,LOW);
    digitalWrite(11,HIGH);
  delay(1000);
    digitalWrite(11,LOW);
    digitalWrite(10,HIGH);
  delay(1000);
    digitalWrite(10,LOW);
    digitalWrite(9,HIGH);
  delay(1000);
    digitalWrite(9,LOW);
    digitalWrite(8,HIGH);
  delay(1000);
    digitalWrite(8,LOW);
    digitalWrite(7,HIGH);
  delay(1000);
    digitalWrite(7,LOW);
    digitalWrite(6,HIGH);
  delay(1000);
    digitalWrite(6,LOW);
    digitalWrite(5,HIGH);
  delay(1000);
      digitalWrite(5,LOW);
      digitalWrite(4,HIGH);
  delay(1000);
      digitalWrite(4,LOW);
      digitalWrite(3,HIGH);
  delay(1000);
      digitalWrite(3,LOW);
      digitalWrite(2,HIGH);
  delay(1000);
      digitalWrite(2,LOW);
      digitalWrite(13,LOW);
  delay(1000);
}