void setup() {
  // put your setup code here, to run once:
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10,OUTPUT);


}

void loop() {
  // put your main code here, to run repeatedly
  digitalWrite(8, HIGH);
  digitalWrite(9, LOW);
  digitalWrite(10, LOW);
  delay(1500);
  digitalWrite(8,HIGH);
digitalWrite(9,HIGH);
digitalWrite(10, LOW);
delay(1500);
 digitalWrite(8,HIGH);
digitalWrite(9,HIGH);
digitalWrite(10, HIGH);
delay(1500);
 digitalWrite(8,HIGH);
digitalWrite(9,HIGH);
digitalWrite(10, LOW);
delay(1500);
 digitalWrite(8,HIGH);
digitalWrite(9,LOW);
digitalWrite(10, LOW);
delay(1500);
 digitalWrite(8,LOW);
digitalWrite(9,LOW);
digitalWrite(10, LOW);
delay(1500);
}