void setup() {
  // put your setup code here, to run once:
pinMode(7, INPUT_PULLUP);
pinMode(6, INPUT_PULLUP);
pinMode(10, OUTPUT);
pinMode(9, OUTPUT);
pinMode(8, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:


if (digitalRead(7) == HIGH && digitalRead(6) == HIGH ) 
  digitalWrite(9, HIGH);
else 
  digitalWrite(9, LOW);


if (digitalRead(6) == LOW && digitalRead(7) == HIGH) 
{
  digitalWrite(10, HIGH);
  delay(500);
  digitalWrite(10, LOW);  
  delay(500);
}


if (digitalRead(7) == LOW && digitalRead(6) == HIGH) 
{
  digitalWrite(8, HIGH);
  delay(500);
  digitalWrite(8, LOW);
  delay(500);
}


if (digitalRead(7) == LOW && digitalRead(6) == LOW ) 
{ 
  digitalWrite(8, HIGH);
  digitalWrite(9, HIGH);
  digitalWrite(10, HIGH);

}
else
{ 
  digitalWrite(8, LOW);
  digitalWrite(9, LOW);
  digitalWrite(10, LOW);
  
}
}