int LED = 4 ;
int LED1 = 7;
int LED2 = 8;

void setup() {
pinMode(LED, OUTPUT); pinMode(LED1, OUTPUT); pinMode(LED2, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(LED, HIGH);
digitalWrite(LED1, HIGH);
delay(1000);
digitalWrite(LED1, LOW);
delay(1000);
digitalWrite(LED2, HIGH);
delay(3000);
digitalWrite(LED2, LOW);
delay(3000);
}