void setup() {
  pinMode(2, INPUT);
  pinMode(3, INPUT);
  pinMode(4, INPUT);
  pinMode(5, INPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
}

void loop() {

  digitalWrite(8, digitalRead(2));
  digitalWrite(9, digitalRead(3));
  digitalWrite(10, digitalRead(4));
  digitalWrite(11, digitalRead(5));
}