IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a ball python skeleton
(26, 29, D:1)
  a +0 leather armour
(28, 10, D:1)
  a +2 pair of gloves
(32, 30, D:1)
  a +0 leather armour
(34, 29, D:1)
  a jackal skeleton
(35, 29, D:1)
  a jackal skeleton
(36, 2, D:1)
  a rat skeleton
(37, -10, D:1)
  a goblin skeleton
(37, 26, D:1)
  a +0 ring mail
  a +0 dagger
  a jackal skeleton
(48, 26, D:1)
  a ball python skeleton
(55, 35, D:1)
  an orb of wrath

Level 2 of the Dungeon
(0, 0, D:2)
  a hobgoblin corpse (skeletalised by now)
(8, 30, D:2)
  a frilled lizard skeleton
(10, 31, D:2)
  a +0 helmet
(13, 28, D:2)
  a +0 robe
  a +0 scythe
(14, 42, D:2)
  2 stones
(18, 30, D:2)
  a +0 mace
(20, 32, D:2)
  a rat skeleton
(23, 54, D:2)
  a +0 whip
  2 stones
(24, 0, D:2)
  a +0 dagger
(25, 33, D:2)
  a +2 helmet
(27, 3, D:2)
  a frilled lizard skeleton
(31, 38, D:2)
  a +0 short sword
  a +0 whip
  3 stones
  a kobold corpse (skeletalised by now)
(49, 33, D:2)
  a +0 club
  a goblin corpse (skeletalised by now)
(51, 32, D:2)
  4 stones

Level 3 of the Dungeon
(0, 0, D:3)
  an orb of wrath
(3, -30, D:3)
  a +0 hand axe
(5, -18, D:3)
  a +0 sling
(6, -22, D:3)
  a +0 leather armour
(6, 9, D:3)
  a +0 dagger
(12, 25, D:3)
  a +0 robe
(14, -26, D:3)
  a +0 falchion
(15, -30, D:3)
  a bat corpse (skeletalised by now)
(17, -28, D:3)
  a +0 club
  a +0 whip
  a +0 short sword
  an orc corpse (skeletalised by now)
(29, 12, D:3)
  4 stones
(37, 4, D:3)
  a +0 dagger
(39, 11, D:3)
  a rat skeleton
(39, 13, D:3)
  a frilled lizard skeleton
(40, -29, D:3)
  a +0 dagger
(40, -23, D:3)
  4 stones
  a +0 dagger
(48, 8, D:3)
  a +0 club

Level 4 of the Dungeon
(0, 0, D:4)
  a water moccasin corpse
(19, 15, D:4)
  a +0 dagger
(32, 21, D:4)
  a ball python corpse (skeletalised by now)