#include <LiquidCrystal.h>
LiquidCrystal lcd(12,13,14,15,16,17);

void setup() {
  // put your setup code here, to run once:
  lcd.begin(16,2);
  pinMode(18, OUTPUT);
  pinMode(19, OUTPUT);
  pinMode(21, OUTPUT);
  pinMode(22, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(18, HIGH);
  digitalWrite(19, LOW);
  digitalWrite(21, LOW);
  digitalWrite(22, LOW);
  lcd.print("RED");
  delay(1000);
  lcd.clear();  

  digitalWrite(18, LOW);
  digitalWrite(19, HIGH);
  digitalWrite(21, LOW);
  digitalWrite(22, LOW);
  lcd.print("BLUE");
  delay(1000);
  lcd.clear();  

  digitalWrite(18, LOW);
  digitalWrite(19, LOW);
  digitalWrite(21, HIGH);
  digitalWrite(22, LOW);
  lcd.print("WHITE");
  delay(1000);
  lcd.clear();  

  digitalWrite(18, LOW);
  digitalWrite(19, LOW);
  digitalWrite(21, LOW);
  digitalWrite(22, HIGH);
  lcd.print("PURPLE");
  delay(1000);
  lcd.clear();  


}