int led1=2
int led2=0
int led3=4
int led4=16
int led5=17
int led6=5

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
}

void loop() {
delay (10);
digitalWrite(led1, HIGH);
digitalWrite(led6, HIGH);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
digitalWrite(led5, LOW);
delay(3000);
digitalWrite(led1, LOW);
digitalWrite(led6, LOW);
digitalWrite(led2, HIGH);
digitalWrite(led5, HIGH);
}