IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 dagger
(2, 2, D:1)
  a hobgoblin corpse (skeletalised by now)
(3, -2, D:1)
  a +0 dagger
(9, -26, D:1)
  a rat corpse (skeletalised by now)
(14, -26, D:1)
  a +0 ring mail
(16, 3, D:1)
  a hobgoblin corpse (skeletalised by now)
(23, -49, D:1)
  a +0 chain mail
(26, -17, D:1)
  a +0 ring mail
(27, -51, D:1)
  a frilled lizard corpse (skeletalised by now)
(28, -11, D:1)
  a +0 leather armour
(30, -24, D:1)
  5 poisoned darts
(33, -32, D:1)
  a rat skeleton
(40, -39, D:1)
  a +0 robe
(43, -33, D:1)
  a +0 dagger
  3 stones
(46, -45, D:1)
  a +0 scale mail
(47, -45, D:1)
  a +0 dagger

Level 2 of the Dungeon
[Shop] Baclon's Magic Scroll Shoppe
  a scroll of torment (unknown) (114 gold)
  a scroll of teleportation (unknown) (36 gold)
  a scroll of vulnerability (unknown) (48 gold)
  a scroll of vulnerability (unknown) (48 gold)
  a scroll of silence (unknown) (114 gold)
  a scroll of teleportation (unknown) (36 gold)
(0, 0, D:2)
  a +0 ring mail
(8, -10, D:2)
  a +0 quarterstaff
(16, -4, D:2)
  a +0 short sword
  a +0 scale mail
(18, 18, D:2)
  a +0 club
(19, -7, D:2)
  a +0 mace
(23, 4, D:2)
  a +0 robe
(24, 26, D:2)
  a hobgoblin corpse (skeletalised by now)
(25, 5, D:2)
  a hobgoblin skeleton
(43, 15, D:2)
  a +0 buckler
(44, 15, D:2)
  a rat skeleton
(46, -3, D:2)
  a medusa talisman
(47, -5, D:2)
  a +0 mace
(47, 12, D:2)
  a +0 club
  a goblin skeleton

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 spear
  a +0 rapier
(3, -28, D:3)
  a +0 ring mail
(5, -15, D:3)
  a +0 mace
(22, -51, D:3)
  a jackal corpse (skeletalised by now)
(23, -28, D:3)
  a +0 spear
(24, -52, D:3)
  a jackal corpse (skeletalised by now)
(25, -13, D:3)
  a +0 dagger
(46, -50, D:3)
  a rat corpse (skeletalised by now)

Level 4 of the Dungeon
(0, 0, D:4)
  a scarf of repulsion
  (unseen)
(3, -2, D:4)
  an adder corpse