import scala.io.Source.stdin

object Main extends App {
  for(s<-stdin.getLines) {
    var t:String = s
    while(!t.contains("this") && !t.contains("the") && !t.contains("that")) {
      t = t map { c => if(c.toInt >= 97 && c.toInt <= 121) (c.toInt+1).toChar else if(c==122) 'a' else c }
    }
    print(t)
  }
}