void setup() {
  // put your setup code here, to run once:
pinMode(11,OUTPUT);
pinMode(10,OUTPUT);
pinMode(9, OUTPUT);
pinMode(2, INPUT);
pinMode(4, OUTPUT);
pinMode(4, OUTPUT);
}

void loop() {
digitalWrite(11,HIGH );
if(digitalRead(2)==HIGH)

{
delay(1000);
digitalWrite(11, LOW);
digitalWrite(10, HIGH);
delay(1000);
digitalWrite(10, LOW);
digitalWrite(9, HIGH);
delay(1000);
digitalWrite(9, LOW);
digitalWrite(10, HIGH);
delay(1000);
digitalWrite(10, LOW);
}


}

 {
digitalWrite(4,HIGH );
if(digitalRead(11)==HIGH)
{
digitalWrite(4, HIGH);
digitalWrite(5, LOW);
}
}

{
digitalWrite(4,HIGH );
if(digitalRead(9)==HIGH)
{
digitalWrite(5, HIGH);
digitalWrite(4, LOW);
}
}