const int LED1 = 8;
const int LED2 = 7;

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

void loop() {
digitalWrite(LED1,1);
delay(200);
digitalWrite(LED1,0);
delay(100);
digitalWrite(LED1,1);
delay(200);
digitalWrite(LED1,0);
delay(200);

digitalWrite(LED2,1);
delay(200);
digitalWrite(LED2,0);
delay(100);
digitalWrite(LED2,1);
delay(200);
digitalWrite(LED2,0);
delay(200);
}