IndexError

Level 1 of the Dungeon
(1, 1, D:1)
  5 stones
  a +0 club
(8, -4, D:1)
  a +0 trident
(8, 2, D:1)
  a +0 dagger
(16, -13, D:1)
  a +0 dagger
(16, -6, D:1)
  a +0 whip
  4 stones
(28, -4, D:1)
  a +0 short sword
  3 stones
  a +0 club
(29, -8, D:1)
  a +0 glaive
(33, 25, D:1)
  6 poisoned darts
(39, 4, D:1)
  a +0 short sword
  a +0 leather armour
(39, 8, D:1)
  a +0 club
(45, 3, D:1)
  a +1 dagger of draining
  a stone
(46, 39, D:1)
  a +2 heavy mace

Level 2 of the Dungeon
[Shop] Zeophac's Book Boutique
  the Teachings on the Charmed Nimbus (312 gold)
    Spells                            Type                      Level
     a - Slow                          Hexes                         1
     b - Static Discharge              Conjuration/Air               2
     c - Cigotuvi's Dreadful Rot       Necromancy/Poison/Air         2
     d - Swiftness                     Air                           3
  a book of Air (286 gold)
  a book of Blasting (520 gold)
  a book of Necromancy (312 gold)
  Nikkegi's Papyrus of Sciomancy (520 gold)
    Spells                            Type                      Level
     a - Kiss of Death                 Conjuration/Necromancy        1
     b - Infestation                   Necromancy                    8
     c - Necromutation                 Transmutation/Necromancy      8
  a Young Poisoner's Handbook (260 gold)
  a book of the Earth (468 gold)
  a book of Unlife (468 gold)
  Great Wizards, Vol. VII (390 gold)
(0, 0, D:2)
  a +0 short sword
(1, -28, D:2)
  7 stones
(8, -6, D:2)
  3 stones
(27, -30, D:2)
  4 stones
  a +0 short sword
(27, -13, D:2)
  a +0 short sword
(32, 12, D:2)
  a +0 war axe
(33, -13, D:2)
  a +0 dagger

Level 3 of the Dungeon
(6, -6, D:3)
  a +0 club
  a goblin corpse (skeletalised by now)
(7, -10, D:3)
  a +0 sling
(8, -8, D:3)
  a +0 sling
(10, -39, D:3)
  a frilled lizard corpse
(12, -14, D:3)
  a bat corpse
(13, -15, D:3)
  a +0 club
  a +0 club
  a +0 club
  a +0 club
  a +0 club
  a hobgoblin corpse
  a goblin skeleton
(15, -41, D:3)
  a +0 club
(16, -4, D:3)
  a +0 club
  a hobgoblin corpse
(21, -4, D:3)
  a +0 club
  a goblin corpse (skeletalised by now)
(22, -3, D:3)
  a +0 sling
(23, -3, D:3)
  a +0 short sword
(25, -4, D:3)
  a +0 club
  a hobgoblin corpse (skeletalised by now)
(26, -4, D:3)
  a +0 sling
(26, -3, D:3)
  a +0 club