IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 dagger
  a goblin corpse (skeletalised by now)
(1, 0, D:1)
  a +0 dagger
(3, 1, D:1)
  a +0 trident
(5, -6, D:1)
  a +0 battleaxe
(6, -7, D:1)
  a +0 whip
  a kobold corpse (skeletalised by now)
(7, -5, D:1)
  a +0 plate armour
(22, -8, D:1)
  a +0 antimagic dagger
  a goblin corpse (skeletalised by now)
(24, 1, D:1)
  a hobgoblin skeleton
(28, 42, D:1)
  3 boomerangs
(30, 20, D:1)
  a +0 hand axe
(33, 50, D:1)
  a rat corpse (skeletalised by now)
(36, 31, D:1)
  a +0 whip
(36, 46, D:1)
  a +0 robe
(40, 33, D:1)
  5 stones
(41, 27, D:1)
  a hobgoblin skeleton
(42, 34, D:1)
  a +0 whip
(50, 0, D:1)
  7 stones
(52, -3, D:1)
  a stone
  a kobold skeleton
(60, 12, D:1)
  a +0 club

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 dagger
(9, -9, D:2)
  a +0 robe
(13, 0, D:2)
  a jackal corpse
  a jackal corpse (skeletalised by now)
  a jackal corpse (skeletalised by now)
(20, -6, D:2)
  a rat corpse
(21, 1, D:2)
  4 stones
(21, 7, D:2)
  a ball python corpse