IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 sling
(0, 42, D:1)
  a frilled lizard corpse (skeletalised by now)
(15, 8, D:1)
  4 stones
(23, 3, D:1)
  a +0 spear
(32, 26, D:1)
  a +0 club
(33, 7, D:1)
  a +0 whip
(40, 32, D:1)
  a +0 leather armour
(44, 10, D:1)
  a +0 hand axe
(46, 44, D:1)
  3 stones
  a +0 whip
(48, 31, D:1)
  a +0 chain mail

Level 2 of the Dungeon
(2, 1, D:2)
  10 gold pieces
(41, -10, D:2)
  18 gold pieces
(46, 42, D:2)
  an amulet of guardian spirit
(48, 35, D:2)
  a +0 sling
(52, 26, D:2)
  a hobgoblin corpse
(52, 29, D:2)
  a +0 club
  a hobgoblin corpse
(52, 30, D:2)
  5 stones
(53, 28, D:2)
  a +0 sling
  a +0 club
  a goblin corpse
(54, 29, D:2)
  a +0 dagger
  5 stones

Level 4 of the Dungeon
(0, 0, D:4)
  a +0 short sword
(5, 8, D:4)
  a scroll of summoning
(6, 11, D:4)
  a stone