IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  2 stones
(0, 1, D:1)
  a +0 club
(7, 4, D:1)
  a hobgoblin skeleton
(7, 19, D:1)
  a +0 whip
(10, -3, D:1)
  8 stones
(14, -15, D:1)
  2 stones
(17, -3, D:1)
  a +0 spear

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 dagger
(10, -3, D:2)
  a +0 dagger
(13, 12, D:2)
  a +0 short sword
(23, -1, D:2)
  a +0 dagger
(43, 20, D:2)
  a +0 whip
(45, -9, D:2)
  a +0 dagger
(47, 40, D:2)
  a +0 hand axe
(48, 36, D:2)
  a +0 rapier
(60, 39, D:2)
  a +0 trident

Level 3 of the Dungeon
(6, -19, D:3)
  a +2 long sword of protection
(6, -3, D:3)
  a +0 short sword
(10, -29, D:3)
  a +0 club
(12, -27, D:3)
  a +0 spear
  a +0 whip
(13, -9, D:3)
  a +0 dagger
  a +0 leather armour
(14, -5, D:3)
  a +0 club
(17, -21, D:3)
  a +0 mace
(17, -16, D:3)
  a +0 short sword
(17, -5, D:3)
  a +0 leather armour
(19, -29, D:3)
  a +6 ring of strength
(19, -28, D:3)
  a +0 short sword
  2 stones
(20, -17, D:3)
  a +0 mace
(23, -37, D:3)
  a +0 club
(23, -20, D:3)
  a +0 whip
(31, -33, D:3)
  a +0 plate armour
(55, -18, D:3)
  a +0 club

Level 4 of the Dungeon
(0, 0, D:4)
  a +0 spear
(3, -2, D:4)
  5 stones
(7, 9, D:4)
  a +0 falchion
(8, -18, D:4)
  a +0 flail
(9, -1, D:4)
  a +0 dagger
(10, 7, D:4)
  a +0 plate armour
(13, -20, D:4)
  7 gold pieces
(16, -26, D:4)
  a scroll of immolation
(20, 4, D:4)
  a +0 club
(21, -34, D:4)
  5 stones
(21, -31, D:4)
  a scroll of enchant armour