class Lister(m: Int) {
  private def toList(m: Int): List[Int] = {
    var k = m
    var l: List[Int] = Nil
    while (k > 0) {
      l = k :: l
      k -= 1
    }
    if (m % 2 != 0) {
      l
    } else {
      l.reverse
    }
  }

  override def toString: String = {
    var l = toList(m)
    var s = ""
    while (l != Nil) {
      if (s != "") {
        s += "-"
      }
      s += l.head
      l = l.tail
    }
    s
  }
}

object App {
  def main(v: Array[String]) {
    val c = v.length
    var i = c
    while (i > 0) {
      val m = Integer.parseInt(v(c - i))
      var j = 1
      while (j <= m) {
        val l = new Lister(j)
        println(l)
        j += 1
      }
      i -= 1
    }
  }
}