IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 dagger
(0, 11, D:1)
  a +0 rapier
(6, -6, D:1)
  a +0 giant spiked club
(7, 7, D:1)
  a jackal skeleton
(7, 10, D:1)
  a jackal skeleton
(7, 23, D:1)
  a +0 flail
  a gnoll skeleton
(9, -11, D:1)
  a +0 club
  a goblin skeleton
(10, 26, D:1)
  a +0 ring mail
(14, -10, D:1)
  a rat skeleton
(20, -21, D:1)
  a rat corpse (skeletalised by now)
(32, 3, D:1)
  a ball python corpse (skeletalised by now)
(35, 14, D:1)
  a ball python corpse (skeletalised by now)
(38, -8, D:1)
  a +0 dagger
  a stone
(43, 22, D:1)
  a +0 dagger
(44, 9, D:1)
  a quokka corpse (skeletalised by now)
(44, 16, D:1)
  a +0 dagger
  a ball python corpse (skeletalised by now)
  a goblin corpse (skeletalised by now)
(45, 3, D:1)
  a +3 dagger
(49, -12, D:1)
  a hobgoblin corpse (skeletalised by now)

Level 2 of the Dungeon
(0, 0, D:2)
  a rat skeleton
(4, 33, D:2)
  a hobgoblin corpse (skeletalised by now)
(4, 41, D:2)
  a rat skeleton
(6, 25, D:2)
  a ball python skeleton
(9, 34, D:2)
  a +0 ring mail
(9, 38, D:2)
  a +0 short sword
(11, 23, D:2)
  a +0 flail
  a +0 leather armour
(11, 41, D:2)
  a +0 dagger
(12, 3, D:2)
  a hobgoblin skeleton
(12, 10, D:2)
  a +0 club
(12, 12, D:2)
  a +0 flail
  a +0 leather armour
(12, 17, D:2)
  a +0 chain mail
(13, 16, D:2)
  6 stones
(15, 30, D:2)
  a hobgoblin skeleton
(15, 31, D:2)
  an adder skeleton
(15, 33, D:2)
  a ball python skeleton
(16, 26, D:2)
  a hobgoblin skeleton
(33, 2, D:2)
  a hobgoblin skeleton
(36, 35, D:2)
  a +0 dagger
(38, 4, D:2)
  a +0 hand axe
(45, 21, D:2)
  a ball python skeleton

Level 3 of the Dungeon
(0, 0, D:3)
  3 stones
(5, -10, D:3)
  a +0 dagger
  a +0 animal skin
(6, 4, D:3)
  a +0 spear
(8, 7, D:3)
  a ball python corpse (skeletalised by now)
(10, 3, D:3)
  a +0 short sword
  a kobold corpse (skeletalised by now)
(16, -29, D:3)
  a +0 dagger
(16, -6, D:3)
  a rat skeleton
(17, -4, D:3)
  a hobgoblin skeleton
(17, -3, D:3)
  a +1 hand axe of electrocution
  a frilled lizard corpse (skeletalised by now)
(17, 7, D:3)
  a +0 short sword
(21, -16, D:3)
  a +0 trident
  an orc skeleton
(21, -13, D:3)
  a +0 short sword
  a +0 chain mail
  an orc skeleton
(23, -16, D:3)
  a +0 leather armour
(24, -17, D:3)
  a +0 trident
  a +0 leather armour
(29, -5, D:3)
  a +2 vampiric trident {!w}
(29, 2, D:3)
  a +0 dagger
(31, 8, D:3)
  a +0 shortbow
(33, 12, D:3)
  a +0 chain mail
(34, -17, D:3)
  a +0 chain mail
(34, 12, D:3)
  an adder skeleton
(36, -7, D:3)
  6 poisoned darts
(36, -4, D:3)
  a +0 club
  a +0 leather armour
  a +0 robe
(39, -1, D:3)
  a +0 hand axe
(42, -22, D:3)
  a +0 dagger
  a hound skeleton
  a goblin skeleton
(43, -22, D:3)
  a quokka skeleton
  a bat skeleton
  a bat skeleton
(43, -1, D:3)
  an adder skeleton
(49, -10, D:3)
  a rat skeleton
  a river rat skeleton
(51, -2, D:3)
  a +2 vampiric whip {!w}
(52, -26, D:3)
  a frilled lizard skeleton

Level 4 of the Dungeon
(0, 0, D:4)
  a +0 leather armour
(4, -4, D:4)
  a +0 leather armour
(4, -2, D:4)
  a +0 leather armour
(4, 4, D:4)
  a +4 whip (still there?)
  a gnoll corpse (still there?)
(11, -7, D:4)
  a +0 spear
  a +0 ring mail
  a gnoll corpse
(13, -6, D:4)
  a +0 flail
(14, -13, D:4)
  a +0 quarterstaff
(21, -6, D:4)
  a +0 short sword
(28, -14, D:4)
  an adder corpse
(32, -8, D:4)
  a +0 robe
  a +0 robe
(32, 9, D:4)
  a ring of positive energy