void setup() {
  pinMode(15,OUTPUT);
  pinMode(13,OUTPUT);
  pinMode(10,OUTPUT);
  pinMode(5,OUTPUT);
  pinMode(2,OUTPUT);
  pinMode(0,OUTPUT);
  pinMode(17,OUTPUT);
  pinMode(19,OUTPUT);
  pinMode(21,OUTPUT);
  pinMode(28,OUTPUT);
  pinMode(27,OUTPUT);
  pinMode(26,OUTPUT);
}

void loop() {
  digitalWrite(10,HIGH);
  digitalWrite(5,HIGH);
  digitalWrite(17,HIGH);
  digitalWrite(28,HIGH);
  digitalWrite(13,LOW);
  digitalWrite(27,LOW);
  delay(5000);
  digitalWrite(10,LOW);
  digitalWrite(5,LOW);
  digitalWrite(13,HIGH);
  digitalWrite(2,HIGH);
  delay(2500);
  digitalWrite(13,LOW);
  digitalWrite(2,LOW);
  digitalWrite(15,HIGH);
  digitalWrite(0, HIGH);
  delay(5000);
  digitalWrite(0,LOW);
  digitalWrite(17,LOW);
  digitalWrite(2,HIGH);
  digitalWrite(19,HIGH);
  delay(2500);
  digitalWrite(2,LOW);
  digitalWrite(19,LOW);
  digitalWrite(5,HIGH);
  digitalWrite(21,HIGH);
  delay(5000);
  digitalWrite(21,LOW);
  digitalWrite(28,LOW);
  digitalWrite(19,HIGH);
  digitalWrite(27,HIGH);
  delay(2500);
  digitalWrite(19,LOW);
  digitalWrite(27,LOW);
  digitalWrite(17,HIGH);
  digitalWrite(26,HIGH);
  delay(5000);
  digitalWrite(26,LOW);
  digitalWrite(15,LOW);
  digitalWrite(27,HIGH);
  digitalWrite(13,HIGH);
  delay(2500);
}