IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 club
(2, -23, D:1)
  a +0 whip
(8, -26, D:1)
  a +0 dagger
(11, -28, D:1)
  a +0 falchion
(14, -22, D:1)
  8 stones
(18, -16, D:1)
  a +0 dagger
(18, 7, D:1)
  a +2 dagger of venom
(22, 10, D:1)
  a +0 ring mail
(25, 3, D:1)
  5 poisoned darts
(28, 5, D:1)
  a +0 short sword
(32, -39, D:1)
  4 stones
(36, -13, D:1)
  a stone
  a +0 short sword
(39, -23, D:1)
  a +0 dagger

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 whip
  a +0 whip
  a +0 club
(15, 9, D:2)
  a +0 leather armour
(21, -10, D:2)
  a +0 club
(27, -8, D:2)
  a book of Air
(27, 29, D:2)
  a +0 dagger
(38, 31, D:2)
  a +0 robe
(44, 3, D:2)
  a +0 club
(58, -16, D:2)
  a +0 ring mail

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 whip
(7, 37, D:3)
  a +0 spear
(8, 2, D:3)
  a +0 club
(11, 29, D:3)
  a +0 club
(13, 36, D:3)
  a +0 dagger
(15, 15, D:3)
  a +0 robe
(16, 12, D:3)
  a +0 club
(22, 0, D:3)
  a +0 flail
  an orc corpse (skeletalised by now)
(23, 14, D:3)
  a +0 dagger
(23, 16, D:3)
  7 stones
(31, 21, D:3)
  6 stones

Level 4 of the Dungeon
(0, 0, D:4)
  a +0 falchion
(5, 30, D:4)
  a +0 short sword
(5, 33, D:4)
  a +0 robe
(6, 32, D:4)
  a +0 short sword
(10, 4, D:4)
  a +0 robe
  a +0 dagger
  an orc skeleton
(11, 4, D:4)
  a +0 robe
  a +0 dagger
  an orc skeleton
(13, -5, D:4)
  a book of Sloth
(13, 10, D:4)
  a +0 club
(13, 12, D:4)
  a +0 hand axe
(14, 18, D:4)
  a book of Minor Magic
(19, 33, D:4)
  a +0 short sword
  a +0 dagger
  a +0 sling
(20, 30, D:4)
  an adder corpse
(20, 36, D:4)
  a potion of resistance
(31, -2, D:4)
  2 stones
(38, 6, D:4)
  a +0 hand axe
(42, 10, D:4)
  a +0 whip
  a +0 mace
  4 stones
  a kobold corpse
(47, 9, D:4)
  a +0 sling
  a +0 hand axe