void setup() {
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(8, OUTPUT);
   pinMode(7, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(2, OUTPUT);
   pinMode(1, OUTPUT);
  pinMode(0, OUTPUT);
  pinMode(14, OUTPUT);
  pinMode(15, OUTPUT);
  pinMode(16, OUTPUT);
  pinMode(17, OUTPUT);
   pinMode(18, OUTPUT);
  pinMode(19, OUTPUT);
  pinMode(20, OUTPUT);
  
  // put your setup code here, to run once:

}

void loop() {
 digitalWrite(13, HIGH);
 digitalWrite(12, HIGH);
 digitalWrite(11, HIGH);
 digitalWrite(10, HIGH);
  digitalWrite(9, HIGH);
 digitalWrite(8, HIGH);
 digitalWrite(7, HIGH);
 digitalWrite(6, HIGH);
  digitalWrite(5, HIGH);
 digitalWrite(4, HIGH);
 digitalWrite(3, HIGH);
 digitalWrite(2, HIGH);
  digitalWrite(1, HIGH);
 digitalWrite(0, HIGH);
 digitalWrite(14, HIGH);
 digitalWrite(15, HIGH);
  digitalWrite(16, HIGH);
 digitalWrite(17, HIGH);
 digitalWrite(18, HIGH);
 digitalWrite(19, HIGH);
  digitalWrite(20, HIGH);

delay(2);
digitalWrite(13, HIGH);
delay(500);
 digitalWrite(12,LOW);
 delay(500);
 digitalWrite(11, HIGH);
 delay(500);
 digitalWrite(10, LOW);
 delay(500);
  digitalWrite(9, HIGH);
  delay(500);
 digitalWrite(8, LOW);
 delay(500);
 digitalWrite(7, HIGH);
 delay(500);
 digitalWrite(6, LOW);
 delay(500);
  digitalWrite(5, HIGH);
  delay(500);
 digitalWrite(4, LOW);
 delay(500);
 digitalWrite(3, HIGH);
 delay(500);
 digitalWrite(2, LOW);
 delay(500);
  digitalWrite(1, HIGH);
  delay(500);
 digitalWrite(0, LOW);
 delay(500);
 digitalWrite(14, HIGH);
 delay(500);
 digitalWrite(15, HIGH);
 delay(500);
  digitalWrite(16, HIGH);
  delay(500);
 digitalWrite(17, HIGH);
 delay(500);
 digitalWrite(18, HIGH);
 delay(500);
 digitalWrite(19, HIGH);
 delay(500);
  digitalWrite(20, HIGH);
  delay(500);


  // put your main code here, to run repeatedly:

}