#include <LiquidCrystal.h>

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

int redpin = 13;
int yellowpin = 12;
int greenpin = 8;

void setup() {
  pinMode(redpin, OUTPUT);
  pinMode(yellowpin, OUTPUT);
  pinMode(greenpin, OUTPUT);
  
  lcd.begin(16,2); 
}

void loop() {
lcd.setCursor(0,0);
  digitalWrite(redpin, HIGH);
  digitalWrite(yellowpin, LOW);
  digitalWrite(greenpin, LOW);
  lcd.print("Light:RED"); 
  delay(5000);

  digitalWrite(redpin, LOW);
  digitalWrite(yellowpin, HIGH);
  lcd.clear();
  lcd.print("Light: YELLOW");
  delay(2000);

  digitalWrite(yellowpin, LOW);
  digitalWrite(greenpin, HIGH);
  lcd.clear();
  lcd.print("Light: GREEN"); 
  delay(5000);

  digitalWrite(greenpin, LOW);
  digitalWrite(yellowpin, HIGH);
  lcd.clear();
  lcd.print("Light: YELLOW"); 
  delay(2000);

  digitalWrite(yellowpin, LOW);
}