Undo

Level 1 of the Dungeon
(0, 0, D:1)
  a bat corpse (skeletalised by now)
(4, 24, D:1)
  a +0 robe
(8, 5, D:1)
  a ball python skeleton
(10, 2, D:1)
  a hobgoblin skeleton
(11, 41, D:1)
  a +0 whip
  3 stones
  a kobold skeleton
(14, 19, D:1)
  a ball python skeleton
(15, 17, D:1)
  a hobgoblin skeleton
(15, 19, D:1)
  a +0 dagger
  a goblin skeleton
(16, 19, D:1)
  a bat skeleton
(20, 6, D:1)
  a rat corpse (skeletalised by now)
(21, 5, D:1)
  a quokka corpse (skeletalised by now)

Level 2 of the Dungeon
(0, 0, D:2)
  8 stones
(6, -12, D:2)
  an adder skeleton
(8, 3, D:2)
  a ball python corpse (skeletalised by now)
(10, -21, D:2)
  a hobgoblin corpse (skeletalised by now)
(13, -23, D:2)
  2 stones
(20, -2, D:2)
  a +0 dagger
  a +0 sling
  a goblin skeleton
(21, -7, D:2)
  a ball python skeleton
(21, -6, D:2)
  a hobgoblin skeleton
(23, -2, D:2)
  a hobgoblin corpse (skeletalised by now)
(27, -2, D:2)
  a +0 club
  a +0 club
  a goblin skeleton
(30, 5, D:2)
  a rat corpse (skeletalised by now)
(37, -25, D:2)
  a +0 short sword
  an adder skeleton
(40, 13, D:2)
  a rat skeleton
(43, -17, D:2)
  a +0 short sword
(43, -13, D:2)
  4 stones
(53, -5, D:2)
  a stone
(66, -11, D:2)
  a ball python skeleton

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 ring mail
(9, 1, D:3)
  a +0 leather armour
  a +0 dagger
  a +0 dagger
  a hobgoblin skeleton
(9, 2, D:3)
  a +0 leather armour
  a +0 club
(10, 0, D:3)
  5 stones
(12, -1, D:3)
  a +0 scale mail
  a +0 flail
  an orc skeleton
(15, 18, D:3)
  a hobgoblin corpse (skeletalised by now)
(16, 15, D:3)
  a ball python corpse (skeletalised by now)
  a jackal corpse (skeletalised by now)
(18, -7, D:3)
  a +0 hand axe
  a +0 leather armour
  an orc corpse (skeletalised by now)
(21, -11, D:3)
  a +0 falchion
(21, 4, D:3)
  a +0 sling
(21, 14, D:3)
  a +0 club
  a goblin corpse (skeletalised by now)
(22, -3, D:3)
  an adder skeleton
(22, 1, D:3)
  a +0 dagger
  a +0 sling
  a goblin corpse (skeletalised by now)
(22, 16, D:3)
  a ball python skeleton
(23, -13, D:3)
  6 stones
(25, 16, D:3)
  a +0 dagger
  a goblin skeleton
(30, 15, D:3)
  a +0 club
  an orc skeleton
(31, 1, D:3)
  a +0 short sword
  a +0 ring mail
  an orc corpse (skeletalised by now)
(33, -6, D:3)
  an adder corpse (skeletalised by now)

Level 4 of the Dungeon
(0, 0, D:4)
  6 stones
(3, -6, D:4)
  a +0 scale mail
(10, -6, D:4)
  a ball python corpse (skeletalised by now)
(14, 5, D:4)
  an adder skeleton
(14, 26, D:4)
  a +0 dagger
  a +0 leather armour
  an orc skeleton
(17, 6, D:4)
  a +0 dagger
  a goblin skeleton
(18, 23, D:4)
  5 stones
(20, 39, D:4)
  4 atropa-tipped darts
(21, 8, D:4)
  a howler monkey skeleton
(22, 9, D:4)
  an adder skeleton
(23, 13, D:4)
  a +0 short sword
(28, 19, D:4)
  a hound corpse (skeletalised by now)
(30, 15, D:4)
  a +0 ring mail
(31, 20, D:4)
  3 stones
(37, 31, D:4)
  a +0 tower shield
(53, 4, D:4)
  a hound corpse (skeletalised by now)
(60, 13, D:4)
  a black bear corpse (skeletalised by now)

Level 5 of the Dungeon
(9, 6, D:5)
  a +0 dagger
  a +0 robe
  an orc corpse (skeletalised by now)
(10, 6, D:5)
  a +0 club
  a +0 dagger
  a +0 robe
(11, -13, D:5)
  a +0 falchion
(12, -2, D:5)
  a +0 falchion
(15, -11, D:5)
  a +0 hand axe
(18, -6, D:5)
  a +0 spear
(32, 5, D:5)
  a hound corpse (skeletalised by now)
(33, 12, D:5)
  a +0 whip
  a +0 robe
(42, 4, D:5)
  a scroll of identify
(47, -3, D:5)
  a +0 hand axe
(49, 5, D:5)
  an adder corpse