IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a stone
(0, 1, D:1)
  a bat corpse (skeletalised by now)
(12, 18, D:1)
  a +0 mace
(23, 37, D:1)
  7 stones
(26, 3, D:1)
  a jackal corpse (skeletalised by now)
(26, 13, D:1)
  a +0 sling
(33, 15, D:1)
  a +0 club
(34, 4, D:1)
  4 stones
  a +0 short sword
(35, 12, D:1)
  a +0 dagger
  2 stones
(47, 16, D:1)
  6 stones
(53, 51, D:1)
  a +0 dagger
(54, 15, D:1)
  a +0 dagger
(59, 52, D:1)
  4 stones
(61, 43, D:1)
  a +0 club
(64, 5, D:1)
  5 boomerangs

Level 2 of the Dungeon
(0, 0, D:2)
  a bat corpse
(8, 7, D:2)
  a hobgoblin corpse
(11, -9, D:2)
  a jackal corpse
(12, -12, D:2)
  a +0 short sword
  a kobold corpse
(12, 9, D:2)
  an amulet of guardian spirit {Spirit}
  a potion of curing
(14, 7, D:2)
  3 boomerangs
(16, 15, D:2)
  a +0 whip
  a kobold corpse
(18, -10, D:2)
  an adder corpse