void setup() {
pinMode(13,OUTPUT);
pinMode(11,OUTPUT);
pinMode(10,OUTPUT);
pinMode(8,OUTPUT);
pinMode(7,OUTPUT);
}

void loop() {
  digitalWrite(13,HIGH);
  delay(2000);
  digitalWrite(8,HIGH);
  delay(2000);
  digitalWrite(13,LOW);
  delay(2000);
  digitalWrite(8,LOW);
  delay(2000);
  digitalWrite(11,HIGH); 
  delay(1500);
  digitalWrite(11,LOW);
  delay(1500);
  digitalWrite(10,HIGH);
  delay(1300);
  digitalWrite(7,HIGH);
  delay(1300);
  digitalWrite(10,LOW);
  delay(1300);
  digitalWrite(7,LOW);
  delay(1300);
}