IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 club
(1, -2, D:1)
  a +0 club
(9, 1, D:1)
  a +0 dagger
  2 stones
(22, 23, D:1)
  a +0 dagger
(23, 25, D:1)
  a +0 leather armour
(25, 3, D:1)
  a +0 club
(31, 12, D:1)
  a stone
  a +0 whip
(37, 29, D:1)
  a +0 club
  a +0 whip
(38, 1, D:1)
  3 stones
(38, 23, D:1)
  a +0 pair of boots
(42, 3, D:1)
  2 stones

Level 2 of the Dungeon
(3, -9, D:2)
  a +0 club
(3, 5, D:2)
  5 stones
(6, -9, D:2)
  a +0 club
(10, -5, D:2)
  2 stones
(17, 2, D:2)
  a +0 short sword
(21, -25, D:2)
  6 poisoned darts
(24, -12, D:2)
  a +0 hand axe
(27, -12, D:2)
  a +0 dagger
(27, 27, D:2)
  a +0 robe
(38, 5, D:2)
  a ring of poison resistance {rPois, !d}
(50, -2, D:2)
  7 stones
(53, -5, D:2)
  a +0 hand axe
(56, -1, D:2)
  a +0 dagger

Level 3 of the Dungeon
[Shop] Acoch's Assorted Antiques
  a scroll of poison (96 gold)
  a wand of polymorph (7) (235 gold)
  a scroll of teleportation (72 gold)
  a scroll of identify (48 gold)
  a scroll of fear (96 gold)
  a box of beasts (960 gold)
  a +0 leather armour (48 gold)
  a scroll of blinking (180 gold)
(0, 0, D:3)
  a +0 hand axe
  an orc corpse
(1, 0, D:3)
  a +0 flail
  a +0 leather armour
  a +0 club
  an orc corpse
(9, 24, D:3)
  a rat corpse (skeletalised by now)
(18, 5, D:3)
  a +0 club
  a goblin corpse (skeletalised by now)
(35, -1, D:3)
  a hobgoblin corpse
(40, 14, D:3)
  a ball python corpse
(45, 20, D:3)
  a +0 hand axe of electrocution
  (unseen)
(45, 25, D:3)
  a scroll of identify
(48, 20, D:3)
  a +0 dagger (still there?)
  a boomerang of dispersal (still there?)
(52, 18, D:3)
  a scroll of fear
(58, 39, D:3)
  a +0 ring mail