#include <LiquidCrystal.h>

LiquidCrystal lcd(13, 11, 10, 9, 8, 7);

const int Green = 2;
const int Red = 3;
const int Blue = 4;
const int Yellow = 5;

void setup() {
  pinMode(Green, INPUT_PULLUP);
  pinMode(Red, INPUT_PULLUP);
  pinMode(Blue, INPUT_PULLUP);
  pinMode(Yellow, INPUT_PULLUP);
}

void loop() {
  if (digitalRead(Green)==LOW){
    lcd.begin(16, 2);
    lcd.print("Hello");
  }
  if (digitalRead(Red)==LOW){
    lcd.begin(16, 2);
    lcd.print("How are you?");
  }
  if (digitalRead(Blue)==LOW){
    lcd.begin(16, 2);
    lcd.print("So so");
  }
  if (digitalRead(Yellow)==LOW){
    lcd.begin(16, 2);
    lcd.print("Good");
  }
}