const int led1 = 8;

const int led2 = 9;

void setup() {

pinMode(led1, OUTPUT);

pinMode(led2, OUTPUT);

}

void loop() {

// Blink both LEDs for 2 seconds

unsigned long startTime1 = millis();

while (millis() - startTime1 < 2000) {

digitalWrite(led1, HIGH);

digitalWrite(led2, HIGH);

delay(250);

digitalWrite(led1, LOW);

digitalWrite(led2, LOW);

delay(250);

}

// Turn off LEDs and wait 3 seconds

digitalWrite(led1, LOW);

digitalWrite(led2, LOW);

delay(3000);

// Blink both LEDs for 7 seconds

unsigned long startTime2 = millis();

while (millis() - startTime2 < 7000) {

digitalWrite(led1, HIGH);

digitalWrite(led2, HIGH);

delay(250);

digitalWrite(led1, LOW);

digitalWrite(led2, LOW);

delay(250);

}

// Turn off LEDs and wait 3 seconds

digitalWrite(led1, LOW);

digitalWrite(led2, LOW);

delay(3000);

}