IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 hand axe
(0, 8, D:1)
  a hobgoblin corpse (skeletalised by now)
(3, -6, D:1)
  a +0 ring mail
(16, 4, D:1)
  3 boomerangs
(20, 38, D:1)
  an amulet of reflection
(24, 0, D:1)
  a hobgoblin skeleton
(25, 27, D:1)
  a +0 chain mail
(26, 16, D:1)
  a +0 dagger
(35, 2, D:1)
  a +0 dagger
(35, 15, D:1)
  a +0 leather armour
(46, 28, D:1)
  a ball python corpse (skeletalised by now)

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 club
  a goblin corpse
(1, 0, D:2)
  a +0 club
  a goblin corpse
(4, -19, D:2)
  a rat skeleton
(5, -24, D:2)
  a frilled lizard skeleton
(10, 0, D:2)
  a +0 dagger
(11, -26, D:2)
  a frilled lizard skeleton
(13, 0, D:2)
  a +0 club
  a +0 dagger
  a goblin corpse
  a goblin corpse
(14, 0, D:2)
  a +0 club
  a +0 club
(15, 9, D:2)
  a +0 dagger
(16, -27, D:2)
  an adder skeleton
(17, -24, D:2)
  a +0 sling
(20, 3, D:2)
  a +0 club
(22, 3, D:2)
  a +0 dagger
  a goblin corpse
(23, -25, D:2)
  4 poisoned darts
(27, -10, D:2)
  a hobgoblin corpse (skeletalised by now)
(29, -11, D:2)
  a +0 robe
(31, -8, D:2)
  2 stones
  a kobold corpse (skeletalised by now)
(31, -7, D:2)
  a +0 flail
  a +0 club
  a gnoll corpse (skeletalised by now)
(32, -8, D:2)
  a +0 spear
  a +0 spear
(34, -19, D:2)
  a +0 dagger
(35, -8, D:2)
  a jackal corpse (skeletalised by now)
  a jackal corpse (skeletalised by now)
(42, -4, D:2)
  a +0 barding
(44, -7, D:2)
  a ball python corpse (skeletalised by now)
(44, -5, D:2)
  a +0 dagger
(47, -1, D:2)
  a +0 mace
  a kobold corpse
(48, -1, D:2)
  a frilled lizard corpse (skeletalised by now)