IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 dagger
  a goblin corpse (skeletalised by now)
(6, 1, D:1)
  a bat corpse (skeletalised by now)
(8, 26, D:1)
  a frilled lizard corpse (skeletalised by now)
(12, 13, D:1)
  8 stones
(12, 15, D:1)
  a rat skeleton
(14, 31, D:1)
  a ball python corpse (skeletalised by now)
(17, 15, D:1)
  a rat skeleton
(17, 17, D:1)
  a ball python skeleton
(19, 11, D:1)
  a bat skeleton
(20, 3, D:1)
  a +0 club
  a goblin corpse (skeletalised by now)
(20, 11, D:1)
  a +0 dagger
  4 stones
  a kobold corpse (skeletalised by now)
(21, 23, D:1)
  a hobgoblin skeleton
(33, 17, D:1)
  a hobgoblin skeleton
(34, -4, D:1)
  a book of Conjurations
(34, 23, D:1)
  a goblin skeleton
(40, 12, D:1)
  a ball python skeleton
(48, -3, D:1)
  a rat skeleton
(54, 0, D:1)
  a bat skeleton

Level 2 of the Dungeon
(0, 0, D:2)
  4 stones
(3, 5, D:2)
  a +0 dagger
(39, -45, D:2)
  a jackal skeleton
(41, -19, D:2)
  a +0 dagger
(43, -17, D:2)
  a +0 whip
(44, -42, D:2)
  a +0 short sword
  8 stones
  a goblin skeleton
(55, -38, D:2)
  a +0 club
  a kobold skeleton
(58, -38, D:2)
  a +0 scale mail

Level 3 of the Dungeon
(0, 0, D:3)
  12 gold pieces
(5, -10, D:3)
  a +0 falchion
(7, -18, D:3)
  a +0 dagger
(10, -17, D:3)
  a +0 mace
(14, -2, D:3)
  a +0 ring mail
(15, 3, D:3)
  a +0 ring mail
(22, -27, D:3)
  a +0 club
(24, -32, D:3)
  a rat corpse (skeletalised by now)
(26, -33, D:3)
  a ball python corpse (skeletalised by now)

a sewer
(0, 0, Sewer)
  a giant cockroach corpse
(7, -18, Sewer)
  a scroll of blinking
(7, -17, Sewer)
  a scroll of immolation
(8, -18, Sewer)
  a scroll of blinking
(8, -17, Sewer)
  18 gold pieces
(8, -16, Sewer)
  5 stones
(9, -17, Sewer)
  a scroll of teleportation
(17, -5, Sewer)
  a frilled lizard skeleton
(18, -10, Sewer)
  a frilled lizard skeleton
(18, -4, Sewer)
  a ball python skeleton
(23, -7, Sewer)
  an adder corpse (skeletalised by now)
(23, -4, Sewer)
  an adder corpse (skeletalised by now)