#include <LiquidCrystal.h>
LiquidCrystal lcd(25,26,27,14,12,13);

void setup() {
lcd.begin(16,2);
pinMode(15, OUTPUT);
pinMode(2, OUTPUT);
pinMode(0, OUTPUT);
pinMode(4, OUTPUT);
}

void loop() {
digitalWrite(15, HIGH);
digitalWrite(2, LOW);
digitalWrite(0, LOW);
digitalWrite(4, LOW);
delay(1000);
lcd.setCursor(0,0);
lcd.print("RED");
delay(1000);
lcd.clear();
digitalWrite(15, LOW);
digitalWrite(2, HIGH);
digitalWrite(0, LOW);
digitalWrite(4, LOW);
delay(1000);
lcd.setCursor(0,0);
lcd.print("GREEN");
delay(1000);
lcd.clear();
digitalWrite(15, LOW);
digitalWrite(2, LOW);
digitalWrite(0, HIGH);
digitalWrite(4, LOW);
lcd.setCursor(0,0);
lcd.print("YELLOW");
delay(1000);
lcd.clear();
digitalWrite(15, LOW);
digitalWrite(2, LOW);
digitalWrite(0, LOW);
digitalWrite(4, HIGH);
lcd.setCursor(0,0);
lcd.print("BLUE");
delay(1000);
lcd.clear();
}