IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a quokka corpse (skeletalised by now)
(5, -19, D:1)
  a +0 chain mail
(16, 16, D:1)
  a hobgoblin skeleton
(16, 17, D:1)
  a +2 short sword of freezing
(22, 9, D:1)
  a +0 dagger
(37, -20, D:1)
  a bat skeleton
(39, -19, D:1)
  a +0 dagger
  a goblin skeleton
(40, 1, D:1)
  a +0 robe
(40, 3, D:1)
  a +0 ring mail
(45, -15, D:1)
  a +0 dagger

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 chain mail
(7, 31, D:2)
  a +0 dagger
  a goblin corpse (skeletalised by now)
(13, 23, D:2)
  a +0 hand axe
(18, -13, D:2)
  a gnoll skeleton
(18, -5, D:2)
  a gnoll skeleton
(20, -3, D:2)
  a frilled lizard skeleton
(25, -11, D:2)
  a frilled lizard skeleton
(35, -14, D:2)
  a +0 pair of boots
(35, -1, D:2)
  a +0 ring mail
(37, 13, D:2)
  a +0 dagger
(46, 23, D:2)
  a +0 chain mail

Level 3 of the Dungeon
(0, 0, D:3)
  a frilled lizard corpse (skeletalised by now)
(1, -3, D:3)
  a ball python corpse (skeletalised by now)
(9, -12, D:3)
  a +0 club
(13, -4, D:3)
  a quokka skeleton
(19, -8, D:3)
  a ball python corpse (skeletalised by now)
(21, -11, D:3)
  a frilled lizard skeleton
(23, 5, D:3)
  a +0 long sword
(34, -3, D:3)
  a bat skeleton
(36, -9, D:3)
  a hobgoblin skeleton

Level 4 of the Dungeon
(0, 0, D:4)
  a scroll of identify
(3, -3, D:4)
  a +0 leather armour
  a +0 dagger
  a +0 ring mail
  a +0 short sword
  a +0 war axe
  an orc corpse (skeletalised by now)
  an orc corpse (skeletalised by now)
(4, -3, D:4)
  a +0 robe
  a +0 dagger
  a +0 robe
  a +0 dagger
  an orc corpse (skeletalised by now)
(5, -3, D:4)
  2 boomerangs
  a +0 club
  a +0 trident
  a +0 scale mail
  a +0 club
(5, -1, D:4)
  a +0 trident
  an orc corpse (skeletalised by now)
(6, -1, D:4)
  a +0 ring mail
  a +0 flail
  an orc corpse (skeletalised by now)
(7, -34, D:4)
  5 stones
(10, -34, D:4)
  a scroll of amnesia
(11, -44, D:4)
  a river rat corpse
(20, -36, D:4)
  a scroll of fear
(24, -36, D:4)
  12 gold pieces
(45, -40, D:4)
  a +0 club
  6 darts of dispersal
  a goblin corpse

a sewer
(0, 0, Sewer)
  a potion of haste
(10, -21, Sewer)
  a ball python corpse
(10, -20, Sewer)
  an adder corpse
(11, 8, Sewer)
  a +0 robe
(18, -2, Sewer)
  a giant cockroach corpse
(20, -7, Sewer)
  a rat corpse
(20, -6, Sewer)
  a frilled lizard corpse
(21, -7, Sewer)
  a ball python corpse
(21, -6, Sewer)
  an adder corpse
(25, -13, Sewer)
  a ball python corpse