behind

Level 1 of the Dungeon
(0, 0, D:1)
  an amulet of alchemy
(1, -15, D:1)
  a medusa talisman
(6, 4, D:1)
  a +0 dagger
  a kobold skeleton
(6, 8, D:1)
  a +0 robe
(7, 3, D:1)
  a +0 whip
(12, 11, D:1)
  a +0 dagger
  a stone
(21, 10, D:1)
  a ball python skeleton
(24, -25, D:1)
  a +0 whip
  a kobold corpse (skeletalised by now)
(24, -22, D:1)
  a +0 dagger
  2 stones
  a kobold corpse (skeletalised by now)
(27, -21, D:1)
  a bat corpse (skeletalised by now)
(29, -20, D:1)
  a frilled lizard corpse (skeletalised by now)
(31, -17, D:1)
  a bat corpse (skeletalised by now)
(34, 8, D:1)
  a quokka skeleton

Level 2 of the Dungeon
(10, 10, D:2)
  a hobgoblin corpse (skeletalised by now)
(12, -9, D:2)
  a bat corpse (skeletalised by now)
(22, -28, D:2)
  a +0 short sword
(27, -5, D:2)
  a +0 spear
(27, 9, D:2)
  a frilled lizard corpse (skeletalised by now)
(29, 13, D:2)
  a +0 club
  a hobgoblin skeleton
(36, 11, D:2)
  a ball python skeleton
(40, 14, D:2)
  an orb of stardust
(41, 5, D:2)
  a +0 short sword
(42, -19, D:2)
  an adder corpse (skeletalised by now)
(42, 2, D:2)
  a +0 robe
(45, -23, D:2)
  a +0 robe
(45, 20, D:2)
  a parchment of Jinxbite
(47, -8, D:2)
  a +0 club
  a goblin corpse (skeletalised by now)
(50, -13, D:2)
  a +0 club
(50, 16, D:2)
  a hobgoblin corpse (skeletalised by now)

Level 3 of the Dungeon
(0, 7, D:3)
  a +0 halberd (still there?)
  a +2 spear of freezing (still there?)
(1, 7, D:3)
  a +0 flail (still there?)
  a +0 dagger (still there?)
  a +0 club (still there?)
  a +0 animal skin (still there?)
  a +2 helmet (still there?)
  a +0 club (still there?)
  a gnoll corpse (still there?)
  a goblin corpse (still there?)
  a hobgoblin corpse (still there?)
(4, 8, D:3)
  a +0 sling
  a +0 dagger
  a goblin corpse
(10, 11, D:3)
  a +0 club
  a rat skeleton