IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 dagger
  a goblin corpse (skeletalised by now)
(2, -33, D:1)
  a ball python corpse (skeletalised by now)
(2, -28, D:1)
  a hobgoblin corpse
(4, -15, D:1)
  a +0 dagger
  a goblin skeleton
(8, -29, D:1)
  a frilled lizard skeleton
(13, -35, D:1)
  a frilled lizard corpse (skeletalised by now)
(15, -28, D:1)
  a ball python skeleton
(17, -26, D:1)
  a hobgoblin skeleton
(18, -7, D:1)
  a +0 short sword
  a stone
(18, -6, D:1)
  a frilled lizard skeleton
(19, -28, D:1)
  a hobgoblin skeleton
(22, 4, D:1)
  a +0 plate armour
(24, -38, D:1)
  a jackal corpse (skeletalised by now)
(26, -41, D:1)
  a jackal corpse (skeletalised by now)
(27, -38, D:1)
  a kobold corpse (skeletalised by now)
(27, -19, D:1)
  a +0 war axe
(31, 14, D:1)
  a +0 dagger
(32, -5, D:1)
  a ball python skeleton
(34, 16, D:1)
  a hobgoblin corpse (skeletalised by now)
(41, -32, D:1)
  a hobgoblin skeleton
(46, -18, D:1)
  a ball python skeleton
(47, -20, D:1)
  a +0 club
  a goblin skeleton
(49, -26, D:1)
  5 stones
(51, -13, D:1)
  a +0 whip
(55, -3, D:1)
  a quokka skeleton
(56, -15, D:1)
  a +0 plate armour
(56, -3, D:1)
  a frilled lizard skeleton
(57, -3, D:1)
  a +0 dagger
(59, -3, D:1)
  a hobgoblin skeleton

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 sling
(18, 25, D:2)
  a +0 ring mail
  a +0 ring mail