IndexError

Level 1 of the Dungeon
[Shop] Nuso's Weapon Shoppe
  a +0 sling (18 gold)
  8 stones (9 gold)
  a +0 dagger (24 gold)
  9 stones (10 gold)
  the +10 rapier of the Pill Bug {elec, +Blink rN+ Dex-3} (862 gold)
    Dex:       It affects your dexterity (-3).
    rN:        It protects you from negative energy.
    +Blink:    It lets you blink.
  a +0 flail (42 gold)
  5 stones (6 gold)
(0, 0, D:1)
  a +0 dagger
(3, 14, D:1)
  a +0 short sword
(8, 0, D:1)
  5 stones
(8, 4, D:1)
  5 stones
(8, 23, D:1)
  4 stones
(11, 26, D:1)
  a +0 short sword
  5 stones
(13, 24, D:1)
  a +0 club
  5 stones
(16, 19, D:1)
  a +0 scale mail
(43, -1, D:1)
  a +0 dagger
(48, 20, D:1)
  a +0 leather armour

Level 2 of the Dungeon
(2, -7, D:2)
  a +0 dagger
(4, 32, D:2)
  a +0 dagger
(5, -5, D:2)
  8 stones
(6, 42, D:2)
  a +0 dagger
(10, 31, D:2)
  a +0 ring mail
(13, -7, D:2)
  a +0 scale mail
(15, 24, D:2)
  5 stones
(17, 10, D:2)
  a +0 trident
(18, -8, D:2)
  a +0 leather armour
(18, 24, D:2)
  a +0 plate armour
(29, 25, D:2)
  a +0 club
(42, 30, D:2)
  a +0 mace of protection
  a +0 scale mail
(45, 25, D:2)
  a +0 ring mail

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 whip
  an orc corpse
(7, -37, D:3)
  a +0 falchion
(7, -34, D:3)
  a +0 club
(8, -39, D:3)
  8 stones
(9, -34, D:3)
  a +0 dagger of flaming
  a +0 leather armour
(13, -23, D:3)
  a +0 dagger
  a +0 club
(15, -15, D:3)
  a +0 hand axe
(16, -21, D:3)
  a +0 club
(16, -20, D:3)
  a +0 dagger
  a +0 dagger
  a +0 club
(18, -15, D:3)
  a +0 club
  a +0 robe
(21, -26, D:3)
  a +0 hand axe
(28, -16, D:3)
  an amulet of faith {Faith, !P}
(31, -43, D:3)
  6 stones
(36, -21, D:3)
  a +0 short sword
(42, -2, D:3)
  5 stones
(51, -36, D:3)
  3 boomerangs
  a +0 trident
(52, -36, D:3)
  a +0 ring mail
  a +0 flail
  a +0 leather armour
  2 boomerangs
  a +0 club
(53, -26, D:3)
  an adder corpse (skeletalised by now)
(54, -36, D:3)
  a +0 dagger
(60, -36, D:3)
  6 boomerangs
(66, -22, D:3)
  a +0 short sword