import scala.io.StdIn

object Solution {
  private val wrongPassword = "WRONG PASSWORD"

  private def validateLogin(loginAttempt: String, passwords: Seq[String]): String = {
    def parse(remaining: String): Option[Seq[String]] = {
      if (remaining.isEmpty)
        return Some(Nil)
      passwords
        .find(remaining.startsWith)
        .flatMap { token => parse(remaining.substring(token.length)).map(token +: _) }
    }
    parse(loginAttempt)
      .map(_.mkString(" "))
      .getOrElse(wrongPassword)
  }

  def main(args: Array[String]): Unit = {
    val in = Iterator
      .continually(StdIn.readLine())
      .takeWhile(null != _)
      .map(_.trim)
    val t = in.next().toInt
    (1 to t)
      .map { _ =>
        val n = in.next().toInt
        val passwords = in.next().split(' ').toSeq
        val loginAttempt = in.next()
        validateLogin(loginAttempt, passwords)
      }
      .foreach(println)
  }
}