object Main {
  def main(args: Array[String]): Unit = {
    @tailrec
    def convert(line:String):String = {
      line match {
        case str if str.matches(".*(the|that|this).*") => str
        case str =>
          convert(str.map {
            case ch if 'b' to 'z' contains ch => (ch - 1).toChar
            case ch if ch == 'a' => 'z'
            case ch => ch
          })
      }
    }
    val sc = new java.util.Scanner(System.in)
    while (sc.hasNextLine) {
      println(convert(sc.nextLine()))
    }
  }
}