const int buttonPin3 = 3;
const int buttonPin2 = 2;
const int buttonPin1 = 1;

const int ledPin3 = 10;
const int ledPin2 = 9;
const int ledPin1 = 8;

int buttonState1 = 0;
int buttonState2 = 0;
int buttonState3 = 0;


void setup() {
  // put your setup code here, to run once:
pinMode(buttonPin1, INPUT);
pinMode(buttonPin2, INPUT);
pinMode(buttonPin3, INPUT);
pinMode(ledPin1, OUTPUT);
pinMode(ledPin2, OUTPUT);
pinMode(ledPin3, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
 buttonState1 = digitalRead(buttonPin1);
if (buttonState1 == HIGH) {
  digitalWrite(ledPin1, HIGH);
  digitalWrite(ledPin2, HIGH);
  digitalWrite(ledPin3, HIGH);
} else {
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin3, LOW);
}

 buttonState2 = digitalRead(buttonPin2);
if (buttonState2 == HIGH) {
  digitalWrite(ledPin1, HIGH);
  delay(500);
  digitalWrite(ledPin2, HIGH);
  delay(1000);
  digitalWrite(ledPin3, HIGH);
  delay(1500);
  } else {
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin3, LOW);
}

 buttonState3 = digitalRead(buttonPin3);
if (buttonState3 == HIGH) {
  digitalWrite(ledPin1, HIGH);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin3, HIGH);
  delay(1500);
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, HIGH);
  digitalWrite(ledPin3, HIGH);
  delay(1500);
  digitalWrite(ledPin2, HIGH);
  digitalWrite(ledPin3, LOW);
  digitalWrite(ledPin1, HIGH);
  delay(1500);
  } else {
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin3, LOW);
}
}