int switchState=0;
void setup() {
  // put your setup code here, to run once:
pinMode(2, INPUT);
pinMode(3, INPUT);
pinMode(4, INPUT);
pinMode(5, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
 switchState=digitalRead(2) ;
if (switchState==LOW)
  {
    digitalWrite(3, HIGH);
    delay(500);
   digitalWrite(3, LOW);
    delay(500);
  }
else
  {
  digitalWrite(3, HIGH);
 delay(1000);
 digitalWrite(3, LOW);
 delay(500);
 digitalWrite(3, HIGH);
 delay(500);
 digitalWrite(3, LOW);
 delay(500);
 digitalWrite(3, HIGH);
 delay(500);
 digitalWrite(3, LOW);
 delay(500);

 digitalWrite(4, HIGH);
 delay(1000);
 digitalWrite(4, LOW);
 delay(500);

 digitalWrite(5, HIGH);
 delay(1000);
 digitalWrite(5, LOW);
 delay(500);
 digitalWrite(5, HIGH);
 delay(500);
 digitalWrite(5, LOW);
 delay(500);
 digitalWrite(5, HIGH);
 delay(500);
 digitalWrite(5, LOW);
 delay(500);

 digitalWrite(4, HIGH);
 delay(1000);
 digitalWrite(4, LOW);
 delay(500);
  }
}