IndexError

Level 1 of the Dungeon
(2, -24, D:1)
  a stone
  a +0 dagger
(3, 0, D:1)
  a stone
(4, -25, D:1)
  a rat skeleton
(6, -27, D:1)
  a +0 dagger
(10, 7, D:1)
  a hobgoblin skeleton
(11, 4, D:1)
  a ball python skeleton
(12, 9, D:1)
  a +0 mace
(15, -3, D:1)
  a ball python skeleton
(20, -26, D:1)
  a hobgoblin corpse (skeletalised by now)
(23, -17, D:1)
  6 stones
(26, -10, D:1)
  4 stones
(29, -29, D:1)
  a rat corpse (skeletalised by now)
(29, -22, D:1)
  a frilled lizard skeleton
(31, -25, D:1)
  a +0 short sword
  a kobold corpse (skeletalised by now)

Level 2 of the Dungeon
(0, 0, D:2)
  a +4 ring of protection
(7, -35, D:2)
  a +0 club
(18, -42, D:2)
  a +0 club
(18, -18, D:2)
  5 stones
(18, -11, D:2)
  a jackal skeleton
(19, -2, D:2)
  3 large rocks {!d}
(20, -11, D:2)
  a jackal skeleton
(20, -2, D:2)
  3 stones
(21, -11, D:2)
  a frilled lizard skeleton
(22, -11, D:2)
  a rat skeleton
(23, -33, D:2)
  a +0 dagger
  an adder skeleton
(23, -11, D:2)
  a bat skeleton
(23, -10, D:2)
  a jackal skeleton
(26, -23, D:2)
  a +0 dagger
  a goblin skeleton
(29, -15, D:2)
  a +0 hand axe
(30, -42, D:2)
  a hobgoblin skeleton
(30, -14, D:2)
  a +0 tower shield
(32, 0, D:2)
  a +0 hand axe
(38, -4, D:2)
  a rat skeleton
(48, -13, D:2)
  a hobgoblin corpse (skeletalised by now)
(49, -36, D:2)
  5 stones

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 robe
  a +0 club
  the human skeleton of Jessica
(9, -4, D:3)
  a +0 ring mail
(13, 29, D:3)
  a +0 trident
(20, -1, D:3)
  a +0 robe
  a +0 dagger
(21, -1, D:3)
  a +0 leather armour
  a +0 short sword
(22, -6, D:3)
  a jackal corpse (skeletalised by now)
(22, -2, D:3)
  a +0 club
(22, -1, D:3)
  a +0 leather armour
  a +0 falchion
(22, 5, D:3)
  a bat skeleton
(23, 20, D:3)
  a +0 dagger
  a +0 leather armour
  an orc corpse (skeletalised by now)
(24, 8, D:3)
  a +0 mace
  a rat skeleton
(25, -5, D:3)
  a jackal corpse (skeletalised by now)
(25, 8, D:3)
  a +0 robe
  a +0 dagger
(26, 9, D:3)
  a +0 club
  an orc skeleton
(26, 20, D:3)
  a +0 club
  a +0 ring mail
(26, 22, D:3)
  a +0 flail
(27, 9, D:3)
  5 stones
(28, 6, D:3)
  a +3 ring mail
  6 stones
  a +0 club
  a goblin skeleton
(28, 16, D:3)
  a +0 dagger
(32, -5, D:3)
  a bat corpse (skeletalised by now)
(32, 24, D:3)
  a +0 short sword
  4 stones
  a kobold skeleton
(32, 25, D:3)
  a +0 war axe of venom
(32, 27, D:3)
  a jackal skeleton
(38, 11, D:3)
  a +0 club
  a goblin skeleton
(48, 16, D:3)
  a bat skeleton

Level 4 of the Dungeon
(5, 29, D:4)
  a +0 leather armour
  a +0 rapier
(8, 9, D:4)
  a stone
(9, 33, D:4)
  6 stones
(12, 13, D:4)
  3 stones
(12, 30, D:4)
  a +0 club
(19, 11, D:4)
  a +0 chain mail
(20, 30, D:4)
  a quokka corpse (skeletalised by now)
(23, 0, D:4)
  a hobgoblin skeleton
(24, 16, D:4)
  a +0 shortbow
(25, -7, D:4)
  a hobgoblin skeleton
(28, 4, D:4)
  a +4 spectral club
  the goblin skeleton of Ijyb
(30, 7, D:4)
  6 stones
(35, -6, D:4)
  a +0 scale mail
(40, 32, D:4)
  a +0 mace
(41, 4, D:4)
  a +0 spear
(42, -2, D:4)
  a +0 robe

Level 5 of the Dungeon
(0, 0, D:5)
  a hound corpse (skeletalised by now)
(4, 2, D:5)
  a +0 flail
(8, -2, D:5)
  a +0 hand axe
  an orc corpse (skeletalised by now)
(8, 0, D:5)
  a +0 leather armour
  a +0 club
  an orc skeleton
(8, 1, D:5)
  a +0 falchion
  a +0 chain mail
  a +0 dagger
  a +0 club
(9, -7, D:5)
  a +0 ring mail
  a +0 hand axe
(15, -23, D:5)
  2 boomerangs
(21, 26, D:5)
  a +5 ring of evasion
(25, 20, D:5)
  an iguana corpse
(35, -21, D:5)
  a +0 arbalest
  a +0 leather armour
  a +0 flail
(38, -19, D:5)
  a +0 quarterstaff
(38, 6, D:5)
  an adder skeleton
(45, 5, D:5)
  a +0 hand axe

Level 6 of the Dungeon
(0, 0, D:6)
  5 stones
(32, -26, D:6)
  a +0 flail
  a +0 leather armour
  an orc corpse