IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a talisman of death
(4, -29, D:1)
  a +0 club
(11, -11, D:1)
  a +0 buckler
(27, 2, D:1)
  a stone
(38, -24, D:1)
  a +0 dagger
(45, -14, D:1)
  a +0 mace

Level 2 of the Dungeon
[Shop] Gehobuab's Antique Armour Emporium
  a +0 robe (16 gold)
  a +1 hat (253 gold)
  a +1 pair of boots of stealth (379 gold)
  a +0 robe (16 gold)
  a +1 pair of boots of flying (379 gold)
  a +0 pair of boots (103 gold)
(0, 0, D:2)
  a +0 club
(6, -16, D:2)
  a +0 mace
(8, -28, D:2)
  a +1 heavy mace
(8, -18, D:2)
  a +0 club
(25, 5, D:2)
  a +0 sling
  a +0 club
(26, -18, D:2)
  4 stones
(43, -18, D:2)
  a +0 dagger

Level 3 of the Dungeon
(9, 18, D:3)
  a +0 whip
(16, 30, D:3)
  a +0 hand axe
(17, 31, D:3)
  a +0 trident
(18, 32, D:3)
  a +0 flail
(19, 33, D:3)
  a +0 club
(23, 9, D:3)
  a +0 dagger
(23, 29, D:3)
  6 stones
(28, 10, D:3)
  9 stones
(42, 31, D:3)
  a scarf of harm
  a +0 short sword
(43, 9, D:3)
  a +0 dagger
(48, 22, D:3)
  a +0 whip

Level 4 of the Dungeon
[Shop] Piovif's Distillery
  a potion of mutation (112 gold)
  a potion of curing (42 gold)
  a potion of brilliance (56 gold)
  a potion of haste (140 gold)
  a potion of degeneration (14 gold)
  a potion of enlightenment (70 gold)
  a potion of attraction (42 gold)
  a potion of ambrosia (112 gold)
  a potion of degeneration (14 gold)
(0, 0, D:4)
  a +0 short sword
(0, 2, D:4)
  a scorpion corpse
(1, -5, D:4)
  a +0 whip (still there?)
  a +0 flail of protection (still there?)
  a gnoll corpse (still there?)
(5, 3, D:4)
  a +0 whip
  a +0 flail
  a gnoll corpse
(18, -2, D:4)
  a +1 heavy hand axe
(39, 1, D:4)
  a scroll of identify
(41, 22, D:4)
  a +0 mace
(43, 18, D:4)
  a +0 long sword
(48, 24, D:4)
  a +0 robe
  a +0 robe
  a +0 ring mail
  a +0 ring mail
  a +0 ring mail
  a +0 leather armour
  a +0 robe
(51, 18, D:4)
  a +0 hand axe
(51, 19, D:4)
  a +0 dagger
  a +0 club
  a +0 dagger
  a +0 hand axe