Calibre

the Dungeon
(0, 0, D)
  a stone
(0, 5, D)
  a goblin skeleton
  a jackal skeleton
(0, 7, D)
  a stone
  a kobold skeleton
(0, 9, D)
  an arrow
(0, 11, D)
  a +0 shortbow
  4 arrows
  an adder corpse