IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  6 stones
(21, 17, D:1)
  a +0 dagger
(41, -29, D:1)
  a +0 dagger
(41, -27, D:1)
  a +0 club
(44, -15, D:1)
  a +0 dagger
(53, -3, D:1)
  a +0 dagger

Level 2 of the Dungeon
(10, -5, D:2)
  an amulet of the acrobat
(16, -13, D:2)
  a +0 club

Level 3 of the Dungeon
(3, -8, D:3)
  a +0 dagger
  a +0 sling
(3, -1, D:3)
  a +0 hand axe
  a +0 scale mail
(7, 17, D:3)
  4 stones
(11, -33, D:3)
  a stone
(11, -32, D:3)
  3 stones
(11, -22, D:3)
  a +0 scale mail
  a +0 trident
(11, 15, D:3)
  a +0 leather armour
(12, -32, D:3)
  5 stones
(19, -4, D:3)
  a +0 leather armour
  a hobgoblin corpse (skeletalised by now)
(27, 3, D:3)
  a +0 club
(28, -26, D:3)
  a +0 chain mail
(28, 14, D:3)
  9 stones
(38, -35, D:3)
  a +0 club
(47, -26, D:3)
  a +0 ring mail
(52, 2, D:3)
  a +0 dagger
  a +0 sling

Level 4 of the Dungeon
(0, 0, D:4)
  a scroll of teleportation
(6, -4, D:4)
  a +0 ring mail
(13, -6, D:4)
  a jackal corpse
(14, -7, D:4)
  a jackal corpse
(16, -12, D:4)
  a scroll of teleportation
(30, -3, D:4)
  a +0 flail
(30, 0, D:4)
  a jackal corpse (skeletalised by now)
(32, -1, D:4)
  a +0 leather armour