#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

void setup() {
  lcd.begin(16, 2);

  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
}

void loop() {
  digitalWrite(3, HIGH);
  for(int i = 5; i >= 0; i--){
    lcd.setCursor(7, 0);
    lcd.print(i);
    delay(1000);
    lcd.clear();
  }

  digitalWrite(3, LOW);

  digitalWrite(4, HIGH);
  delay(600);

  digitalWrite(4, LOW);

  digitalWrite(5, HIGH);
  for(int i = 3; i >= 0; i--){
    lcd.setCursor(7, 0);
    lcd.print(i);
    delay(1000);
    lcd.clear();
  }

  digitalWrite(5, LOW);
}