behind

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 dagger
  a goblin corpse (skeletalised by now)
(5, -11, D:1)
  a bat skeleton
(8, 11, D:1)
  a +0 club
  3 stones
(8, 12, D:1)
  a bat corpse (skeletalised by now)
(20, 16, D:1)
  a bat corpse (skeletalised by now)
(26, -32, D:1)
  a parchment of Inner Flame
(26, -23, D:1)
  a +0 dagger
  a stone
(28, 6, D:1)
  a +0 whip
(28, 7, D:1)
  a +0 short sword
  3 stones
  a kobold skeleton
(43, -34, D:1)
  a +0 whip
  a stone
(44, -3, D:1)
  a hobgoblin skeleton
(46, -20, D:1)
  a hive talisman
(46, 3, D:1)
  a +0 spear
(52, -28, D:1)
  a hobgoblin corpse (skeletalised by now)

Level 2 of the Dungeon
(10, -3, D:2)
  a bat corpse (skeletalised by now)
(11, 11, D:2)
  an adder corpse (skeletalised by now)
(14, -7, D:2)
  a ball python corpse (skeletalised by now)
(20, 24, D:2)
  a +0 spear
(28, 21, D:2)
  an amulet of reflection
(40, 5, D:2)
  a +0 plate armour
(48, 12, D:2)
  a +0 chain mail
(51, 0, D:2)
  a +0 trident

Level 3 of the Dungeon
(6, 6, D:3)
  a hobgoblin corpse
(6, 8, D:3)
  a dart slug corpse
(16, -12, D:3)
  a ring of wizardry
(22, -33, D:3)
  a +0 hand axe
  an orc corpse
(23, -32, D:3)
  a +0 buckler