IndexError

Level 1 of the Dungeon
(0, 43, D:1)
  a +0 scale mail
(3, 38, D:1)
  5 stones
(4, 39, D:1)
  a +0 club
(11, 8, D:1)
  a +0 club
(14, 10, D:1)
  a +0 dagger
(17, 31, D:1)
  a +0 robe
(18, 35, D:1)
  a +0 leather armour
(26, 4, D:1)
  5 stones
(28, 0, D:1)
  a +0 trident
(29, 19, D:1)
  a +0 dagger
(33, 2, D:1)
  a +0 ring mail
(37, 33, D:1)
  4 stones
(42, 20, D:1)
  a +0 plate armour

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 club
(22, 0, D:2)
  a +0 leather armour
(31, -1, D:2)
  a +0 short sword
(34, -3, D:2)
  a +0 leather armour
(35, 24, D:2)
  a +0 club
(49, 20, D:2)
  6 poisoned darts

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 hand axe
(3, -21, D:3)
  a +0 leather armour
(14, -16, D:3)
  a ring of poison resistance {rPois, !d}
(22, -5, D:3)
  a +0 short sword
  a +4 chain mail
(23, -5, D:3)
  a +0 dagger
(24, -24, D:3)
  a +0 chain mail
(24, -5, D:3)
  a +0 short sword
  3 stones
(25, -14, D:3)
  a +0 hand axe
  a +2 ring mail of cold resistance
(26, 7, D:3)
  a +0 spear
(29, -6, D:3)
  a +0 club
(36, -19, D:3)
  a +0 dagger
  7 poisoned darts

Level 4 of the Dungeon
(0, 0, D:4)
  a +0 ring mail
  a +0 dagger
(1, -1, D:4)
  a +0 whip of electrocution
(2, -1, D:4)
  a +0 club
  an orc corpse