IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 ring mail
(4, 9, D:1)
  a goblin skeleton
(5, 2, D:1)
  a rat skeleton
(5, 11, D:1)
  a +0 club
(7, 13, D:1)
  a +0 flail
(12, -12, D:1)
  a goblin skeleton
  a kobold skeleton
(12, -7, D:1)
  a jackal skeleton
(13, -7, D:1)
  a jackal skeleton
  a jackal skeleton
(20, 11, D:1)
  a kobold skeleton
(21, -2, D:1)
  a +0 leather armour
(24, -28, D:1)
  a frilled lizard skeleton
(26, -23, D:1)
  a ball python skeleton
(26, -22, D:1)
  a quokka skeleton
(28, -22, D:1)
  a +0 chain mail
(29, -23, D:1)
  a ball python skeleton
(31, 9, D:1)
  a +0 robe
(34, 15, D:1)
  a ball python skeleton
(38, -27, D:1)
  a gnoll skeleton
(39, -27, D:1)
  a +2 dagger of electrocution
  a kobold skeleton
(39, -14, D:1)
  a kobold skeleton
(45, -36, D:1)
  a goblin corpse (skeletalised by now)
(46, -36, D:1)
  a bat corpse (skeletalised by now)
  a bat corpse (skeletalised by now)
(47, -9, D:1)
  a ball python corpse (skeletalised by now)

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 club
  a +0 short sword
  a +0 dagger
  a +0 dagger
  a +0 dagger
  a +0 club
  a +0 whip
  a +0 dagger
  a +0 dagger
  a +0 mace
  a +0 club
  a +0 club
  a +0 club
  a +0 dagger
  a +0 dagger
  a kobold corpse (skeletalised by now)
(15, -16, D:2)
  a +0 spear
(16, -16, D:2)
  a +0 club
  a goblin skeleton
(22, -29, D:2)
  a +0 robe
(32, -9, D:2)
  a +0 spear
  a gnoll skeleton
(34, -5, D:2)
  a +0 leather armour

Level 3 of the Dungeon
(0, 0, D:3)
  a scroll of noise
(3, -5, D:3)
  a scroll of poison
(5, 7, D:3)
  a +0 short sword
  a +0 ring mail
  an orc corpse
(6, 6, D:3)
  a +0 club
  a +0 robe
  an orc corpse
(7, 7, D:3)
  3 gold pieces