IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a ball python skeleton
(3, 13, D:1)
  a flux talisman
(4, 17, D:1)
  a +0 dagger
(11, -19, D:1)
  7 stones
(20, 23, D:1)
  a rat corpse (skeletalised by now)
(22, -17, D:1)
  a hobgoblin skeleton
(24, -8, D:1)
  a book of the Warp
(25, 8, D:1)
  a book of the Earth
(31, 32, D:1)
  a +0 robe
(34, -13, D:1)
  a frilled lizard skeleton
(36, 21, D:1)
  a +0 robe
(40, 15, D:1)
  a ball python corpse (skeletalised by now)

Level 2 of the Dungeon
(10, 35, D:2)
  a +0 dagger {Gebhard}
  a +0 halberd
  a gnoll skeleton
(11, 17, D:2)
  a +0 dagger
  a goblin skeleton
(11, 35, D:2)
  a +0 spear
(12, 35, D:2)
  a +0 club
  a gnoll skeleton
(16, -8, D:2)
  a ring of ice
(23, 5, D:2)
  a bat skeleton
(25, 7, D:2)
  a +0 dagger
  a goblin skeleton
(27, 11, D:2)
  the felid corpse of Natasha (skeletalised by now)
(35, 6, D:2)
  an adder skeleton
(39, -1, D:2)
  a +0 whip
(43, 4, D:2)
  an adder corpse (skeletalised by now)
(43, 16, D:2)
  6 stones
(45, 13, D:2)
  the felid skeleton of Natasha
(49, -3, D:2)
  a +0 hand axe
(53, 19, D:2)
  3 stones
(53, 33, D:2)
  a hobgoblin corpse (skeletalised by now)
(59, 30, D:2)
  a +0 animal skin
(60, 11, D:2)
  a +0 trident
(61, 33, D:2)
  8 stones
(67, 16, D:2)
  a quokka corpse (skeletalised by now)

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 dagger
  a +0 robe
  an orc corpse
(0, 2, D:3)
  a +0 club
  a +0 trident
(0, 3, D:3)
  a +0 flail
  a +0 flail
  a +0 chain mail
  an orc corpse
(2, -5, D:3)
  a +0 club
  a goblin corpse
(12, 9, D:3)
  a +0 short sword
(17, -5, D:3)
  a +0 dagger
(17, 4, D:3)
  a +0 club
  a +0 whip
  5 poisoned darts
  a +0 dagger
  a +0 robe
  a kobold corpse
(17, 5, D:3)
  a +0 mace
  a +0 leather armour
  a +0 mace
  a +0 leather armour
  an orc corpse
  an orc corpse
(18, 3, D:3)
  a +0 ring mail
(18, 4, D:3)
  a +2 hand axe of venom