import java.io.{BufferedReader, InputStreamReader}
 
object Main {
  def main(args: Array[String]) {
    val stdin =
         new BufferedReader(new InputStreamReader(System.in));
    val name1 = stdin.readLine();
    val name2 = stdin.readLine();
    System.out.println(flames(name1, name2))
  }
 
  def flames(name1: String, name2: String): Char = {
    flames(remaining(name1, name2), 0, "FLAMES")(0)
  }
 
  def remaining(name1: String, name2: String): Int = {
    ((name1 diff name2) ++ (name2 diff name1)).length
  }
 
  def flames(length: Int, start: Int, phrase: String): String = {
    println(phrase)
    if (phrase.length == 1) phrase
    else {
      val toRemove = (start - 1 + length) % phrase.length
      val newPhrase = phrase.zipWithIndex.filter(_._2 != toRemove).map (_._1).toList.mkString
      flames(length, toRemove % newPhrase.length, newPhrase)
    }
  }
}

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