IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 chain mail
(8, 19, D:1)
  a +0 dagger
(8, 25, D:1)
  a +0 sling
(12, 39, D:1)
  2 poisoned darts
(14, -7, D:1)
  a +0 leather armour
(15, 32, D:1)
  a +0 short sword
(40, 43, D:1)
  a +0 whip
  5 stones
(42, -7, D:1)
  5 stones
(44, -4, D:1)
  a +0 hand axe
(53, 33, D:1)
  a +0 ring mail
(60, 34, D:1)
  a +0 orcbow

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 club
(1, 0, D:2)
  a +0 dagger
(1, 1, D:2)
  a +0 club
(1, 10, D:2)
  a +0 dagger
  a +0 sling
(2, 10, D:2)
  a +0 dagger
(3, 10, D:2)
  a +0 club
(4, 10, D:2)
  a +0 club
(5, 0, D:2)
  a +0 helmet
  a +0 animal skin
  a +0 trident
(5, 9, D:2)
  a +0 club
(6, 9, D:2)
  a +0 dagger
  a +0 club
  a +0 club
(9, 1, D:2)
  a +0 flail
(11, -1, D:2)
  a +0 ring mail
(11, 5, D:2)
  3 boomerangs
(13, -6, D:2)
  a +0 whip
(27, 16, D:2)
  a +0 short sword
(34, 21, D:2)
  a +0 dagger
  5 stones
(35, -1, D:2)
  a +0 dagger
(39, 3, D:2)
  7 stones

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 spear
(6, 1, D:3)
  a rat corpse (skeletalised by now)
(15, -5, D:3)
  an Inescapable Atlas
(17, -5, D:3)
  a frilled lizard corpse (skeletalised by now)
(27, -2, D:3)
  a +0 club
(28, -12, D:3)
  6 stones
(28, 1, D:3)
  a +0 dagger
(40, -3, D:3)
  6 stones
(42, -9, D:3)
  a +0 ring mail
(51, -16, D:3)
  a bat corpse (skeletalised by now)

Level 4 of the Dungeon
(0, 0, D:4)
  a scroll of immolation
(3, 5, D:4)
  an adder corpse