IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 leather armour
(6, 4, D:1)
  a rat skeleton
(6, 30, D:1)
  a +0 whip
  4 stones
  a kobold skeleton
(12, 4, D:1)
  a +0 leather armour
(17, 1, D:1)
  a +0 whip
(18, -2, D:1)
  a +0 dagger
  a goblin skeleton
(30, 26, D:1)
  a +0 spear
(36, 11, D:1)
  a +0 plate armour
(46, -7, D:1)
  a ball python corpse (skeletalised by now)

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 dagger
(0, 2, D:2)
  a +0 mace
(9, -2, D:2)
  a +0 cloak
(10, 14, D:2)
  5 stones
(16, 11, D:2)
  a +0 ring mail
(23, 10, D:2)
  a +0 leather armour
(32, -8, D:2)
  a +0 dagger
(32, 9, D:2)
  a +0 robe
  a +0 scythe
  the human skeleton of Sigmund
(33, 3, D:2)
  a quokka skeleton
(41, -6, D:2)
  a frilled lizard corpse (skeletalised by now)
(45, 5, D:2)
  a rat corpse (skeletalised by now)

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 short sword
(1, 23, D:3)
  a +0 ring mail
(2, -1, D:3)
  an adder corpse (skeletalised by now)
(3, 6, D:3)
  a +0 ring mail
(7, 6, D:3)
  a +0 flail
(15, 20, D:3)
  a frilled lizard corpse (skeletalised by now)
(19, 18, D:3)
  3 stones
(29, 11, D:3)
  9 stones
(31, 25, D:3)
  a +0 pair of boots
(37, 5, D:3)
  a +0 whip
(38, 7, D:3)
  a +0 sling
(45, 13, D:3)
  a +0 mace
  a +0 chain mail
  the human corpse of Terence (skeletalised by now)

Level 4 of the Dungeon
(0, 0, D:4)
  a ball python corpse (skeletalised by now)
(0, 15, D:4)
  an iguana corpse (skeletalised by now)
(3, 6, D:4)
  a +0 leather armour
(8, 12, D:4)
  a +0 giant club
  an ogre corpse (skeletalised by now)
(20, -9, D:4)
  a +0 rapier
(21, 18, D:4)
  a +3 dagger of venom (still there?)
  a +0 robe (still there?)
  the elf corpse of Dowan (still there?)
(25, 25, D:4)
  a ball python skeleton
(30, 14, D:4)
  a +0 robe
(30, 17, D:4)
  the +2 pair of gloves "Qeuzy" {Str+6}
    Str+6:      It affects your strength (+6).
(45, 23, D:4)
  the +1 robe "Myuducw" {Fly Dex+2}
    Fly:        It grants you flight.
    Dex+2:      It affects your dexterity (+2).