const int led1 = 1;
const int led2 = 2;
const int led3 = 3;
const int led11 = 18;
const int led22 = 19;
const int led33 = 20;
const int btn1 = 4;
const int btn2 = 5;

void setup() {
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led11, OUTPUT);
  pinMode(led22, OUTPUT);
  pinMode(led33, OUTPUT);
  pinMode(btn1, INPUT_PULLUP);
  pinMode(btn2, INPUT_PULLUP);
}

void loop() {
  digitalWrite(led1, HIGH);
  digitalWrite(led33, HIGH);
  delay(10000);
  digitalWrite(led1, LOW);
  digitalWrite(led33, LOW);
  digitalWrite(led2, HIGH);
  digitalWrite(led22, HIGH);
  delay(1000);
  digitalWrite(led22, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, HIGH);
  digitalWrite(led11, HIGH);
  delay(8000);
  digitalWrite(led3, LOW);
  digitalWrite(led11, LOW);
}