IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 dagger
  a goblin corpse (skeletalised by now)
(15, 52, D:1)
  a +0 club
  a +0 club
  a goblin corpse (skeletalised by now)
  a goblin corpse (skeletalised by now)
(24, 32, D:1)
  7 stones
(27, 38, D:1)
  a quokka skeleton
(28, 30, D:1)
  a quokka skeleton
(30, 38, D:1)
  7 stones
(39, 45, D:1)
  2 boomerangs
(44, 28, D:1)
  a +0 ring mail
(48, 38, D:1)
  a +0 sling
(53, 40, D:1)
  a goblin skeleton

Level 2 of the Dungeon
(0, 0, D:2)
  2 javelins
  a +0 mace
  a hobgoblin skeleton
(8, 39, D:2)
  a +0 dagger
(11, 32, D:2)
  a +0 dagger
(17, 17, D:2)
  a quokka skeleton
(18, -8, D:2)
  a +0 dagger
  a kobold skeleton
(19, -4, D:2)
  a +0 club
  a kobold skeleton
(22, 1, D:2)
  a +0 ring mail
(22, 23, D:2)
  a +0 robe
(23, 14, D:2)
  a +0 dagger
  a +0 sling

Level 3 of the Dungeon
(0, 0, D:3)
  a rat skeleton
(2, -7, D:3)
  a bat skeleton
(11, -12, D:3)
  a +0 battleaxe
(13, -19, D:3)
  a +0 short sword
  a quokka skeleton
(14, 16, D:3)
  3 stones
(15, -31, D:3)
  a frilled lizard corpse (skeletalised by now)
  a frilled lizard corpse (skeletalised by now)
(15, 16, D:3)
  a +0 short sword
(16, -12, D:3)
  a hobgoblin corpse (skeletalised by now)
(17, 15, D:3)
  a ball python skeleton
(18, -21, D:3)
  a beast talisman
(23, 20, D:3)
  a rat skeleton
(26, -31, D:3)
  a +0 leather armour
  4 stones
(26, 1, D:3)
  a +0 leather armour
(28, -18, D:3)
  a frilled lizard corpse
(28, 12, D:3)
  a +0 short sword
(29, 3, D:3)
  4 poisoned darts
(37, 18, D:3)
  a +0 club
(40, 7, D:3)
  a +0 club
  3 stones
  a +0 hand axe
  a kobold skeleton
(41, 8, D:3)
  a +0 short sword
  a +0 dagger
  a +0 club
(42, -24, D:3)
  a +0 ring mail
(43, -23, D:3)
  a +0 whip
(47, -11, D:3)
  a +0 scale mail
(49, -19, D:3)
  an adder skeleton
(52, -10, D:3)
  4 stones
(53, -16, D:3)
  a +0 club
(54, -18, D:3)
  a bat skeleton