IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 dagger
(2, -7, D:1)
  a +0 robe
(22, 16, D:1)
  a +0 short sword
(27, 19, D:1)
  Vopnouxt's Essays on Arenous Virulence
    Spells                            Type                      Level
     a - Passwall                      Transmutation/Earth           2
     b - Animate Armour                Summoning/Earth               4
     c - Borgnjor's Vile Clutch        Necromancy/Earth              5
     d - Eringya's Noxious Bog         Transmutation/Poison          6
(36, -18, D:1)
  a +0 club
(38, 29, D:1)
  a +0 scale mail
(39, 24, D:1)
  2 stones
  a +0 whip
(46, -25, D:1)
  a +0 whip
(55, 24, D:1)
  a +0 leather armour

Level 2 of the Dungeon
(14, 14, D:2)
  a +0 chain mail
(16, 30, D:2)
  a +0 chain mail
(18, 32, D:2)
  4 poisoned darts
(21, 34, D:2)
  a +0 hand axe
(30, 25, D:2)
  a +0 dagger
(34, 19, D:2)
  a +0 pair of boots
(35, 17, D:2)
  a book of Air
(37, 48, D:2)
  an amulet of magic regeneration
(40, 19, D:2)
  a +0 club
(40, 20, D:2)
  a +0 club
(40, 21, D:2)
  a +0 club
(47, 42, D:2)
  9 stones
(48, 11, D:2)
  a book of Power
(48, 20, D:2)
  a +0 spear

Level 3 of the Dungeon
(0, 0, D:3)
  a rat corpse
(1, 3, D:3)
  a dart slug corpse
(10, 1, D:3)
  a +0 dagger
  a goblin corpse
(33, -25, D:3)
  a +0 spear