IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  2 stones
(12, 1, D:1)
  a hobgoblin skeleton
(18, 12, D:1)
  a +0 leather armour
(19, 8, D:1)
  a frilled lizard corpse (skeletalised by now)
(20, -5, D:1)
  a frilled lizard skeleton
(38, 26, D:1)
  a frilled lizard skeleton
(40, 7, D:1)
  a +0 club
(40, 30, D:1)
  5 stones
(44, -2, D:1)
  a +0 robe
(51, 27, D:1)
  a +0 dagger
(55, 29, D:1)
  a +0 whip

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 dagger
  a kobold skeleton
(11, -5, D:2)
  an adder skeleton
(13, 0, D:2)
  an adder corpse (skeletalised by now)
(15, -1, D:2)
  a hobgoblin corpse (skeletalised by now)
(15, 36, D:2)
  a +0 ring mail
(18, 12, D:2)
  a bat corpse (skeletalised by now)
(19, 7, D:2)
  a ball python skeleton
(23, -8, D:2)
  a +0 scythe
  a +0 robe
(26, -15, D:2)
  a +0 dagger
(27, 27, D:2)
  a +0 club
  a goblin skeleton
(28, 22, D:2)
  4 stones
(32, 5, D:2)
  a frilled lizard skeleton
(41, 6, D:2)
  a +0 dagger
  4 stones
  a kobold corpse (skeletalised by now)
(47, 31, D:2)
  a bombardier beetle corpse
(47, 33, D:2)
  a +0 short sword
  a kobold corpse
(48, 4, D:2)
  a quokka corpse (skeletalised by now)
(55, 17, D:2)
  6 stones

Level 3 of the Dungeon
(1, -2, D:3)
  a +0 club
(2, -1, D:3)
  an amulet of guardian spirit
(4, -4, D:3)
  12 gold pieces
(8, 0, D:3)
  5 stones
(9, -4, D:3)
  a scroll of teleportation
(24, 19, D:3)
  a +0 club
  a stone
  a kobold corpse
(24, 21, D:3)
  a +0 club
(24, 28, D:3)
  a +0 robe
(38, 27, D:3)
  5 stones
(42, 16, D:3)
  a rat corpse