int ledPin[8]={19,18,5,17,16,4,0,2};
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  for(int i=0;i<8;i++)
  {
    pinMode(ledPin[i], OUTPUT);
  }
}

void loop() {
  for(int i=0;i<8;i++)
  {
    digitalWrite(ledPin[i], LOW);
  }
  {
  digitalWrite(19, HIGH);
  digitalWrite(18, HIGH);
  delay(1000);
  digitalWrite(5, HIGH);
  digitalWrite(17, HIGH);
  delay(1000);
  digitalWrite(16, HIGH);
  digitalWrite(4, HIGH);
  delay(1000);
  digitalWrite(0, HIGH);
  digitalWrite(2, HIGH);
  delay(1000);
}
for(int i=0;i<8;i++)
  {
    digitalWrite(ledPin[i], HIGH);
  }

{
  digitalWrite(0, LOW);
  digitalWrite(2, LOW);
  delay(1000);
  digitalWrite(16, LOW);
  digitalWrite(4, LOW);
  delay(1000);
  digitalWrite(5, LOW);
  digitalWrite(17, LOW);
  delay(1000);
  digitalWrite(19, LOW);
  digitalWrite(18, LOW);
  delay(1000);
}
  // put your main code here, to run repeatedly:
   // this speeds up the simulation
}