#include <LiquidCrystal.h>


const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;

LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

const int numRows = 2;

const int numCols = 16;

void setup() {


  lcd.begin(numCols, numRows);
}

void loop() {

  for (int thisLetter = 'a'; thisLetter <= 'z'; thisLetter++) {


    for (int  thisRow = 0; thisRow < numRows; thisRow++) {

      for (int thisCol = 0; thisCol < numCols; thisCol++) {

        lcd.setCursor(thisCol, thisRow);

        lcd.write(thisLetter);

        delay(200);

      }

    }

  }
}