IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 robe
(12, -14, D:1)
  a +0 dagger
(13, 9, D:1)
  a +0 short sword
(14, 7, D:1)
  a +0 dagger
(31, -28, D:1)
  a +0 dagger
(32, -10, D:1)
  5 bolts
(40, -28, D:1)
  a +0 dagger

Level 2 of the Dungeon
[Shop] Weneimin's Book Shop
  a book of Cantrips (168 gold)
  a book of Dreams (196 gold)
  a There-And-Back Book (420 gold)
  a book of Dangerous Friends (560 gold)
  a book of Maledictions (196 gold)
  a book of Flames (420 gold)
  a book of Blasting (448 gold)
  a book of Debilitation (280 gold)
  a book of the Earth (504 gold)
  a book of Hexes (504 gold)
  a book of Minor Magic (252 gold)
(0, 0, D:2)
  a +0 long sword
(1, 16, D:2)
  a +0 scale mail
(5, 23, D:2)
  a +0 dagger
(9, 4, D:2)
  a +0 short sword
(46, 5, D:2)
  a +2 mace of holy wrath

Level 3 of the Dungeon
(0, 0, D:3)
  8 poisoned darts
(17, -12, D:3)
  a +0 club
(25, -25, D:3)
  a +0 leather armour
(29, 9, D:3)
  a +0 falchion
  a +0 ring mail
(36, -28, D:3)
  a +0 dagger
(38, -19, D:3)
  a +0 spear
  a kobold corpse
(40, -19, D:3)
  3 stones (still there?)
  an iguana corpse (still there?)
(47, -14, D:3)
  a +0 dagger
(48, -15, D:3)
  a +0 flail
  a +0 leather armour
  a +0 club
  a +0 ring mail
(48, -13, D:3)
  a +0 short sword
(49, -16, D:3)
  a +0 mace of holy wrath
(49, -2, D:3)
  a +0 hand axe
(51, -5, D:3)
  a +0 flail

Level 4 of the Dungeon
(0, 0, D:4)
  10 gold pieces
(0, 6, D:4)
  a stone
(1, 5, D:4)
  a potion of brilliance
(1, 6, D:4)
  a stone
(2, 1, D:4)
  a ring of fire
(2, 5, D:4)
  a stone
(3, 6, D:4)
  6 stones
(7, 4, D:4)
  8 gold pieces
(12, 3, D:4)
  4 gold pieces
(30, 1, D:4)
  a stone
(31, 1, D:4)
  a stone