TryExcept

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 dagger
(11, 33, D:1)
  a +0 plate armour
(24, -2, D:1)
  a +0 short sword
(34, 21, D:1)
  a +0 spear
(40, 22, D:1)
  a +0 leather armour
  an amulet of faith
(50, 27, D:1)
  a +0 short sword

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 dagger
(1, -24, D:2)
  a +0 robe
  a +0 dagger
(4, -22, D:2)
  a +0 dagger
(5, -21, D:2)
  a +0 leather armour
  a +0 club
(5, -20, D:2)
  a +0 leather armour
  a +0 hand axe
(16, -8, D:2)
  a +0 leather armour
(21, 3, D:2)
  a +0 robe
(39, -10, D:2)
  a +0 mace
(48, -31, D:2)
  a +0 club
(48, -29, D:2)
  a +0 spear

Level 3 of the Dungeon
(0, 0, D:3)
  16 gold pieces
(5, 1, D:3)
  a +0 chain mail
  a +0 club
(6, 1, D:3)
  a +0 club (still there?)
  a +0 robe (still there?)
  a +0 dagger (still there?)
  an orc skeleton (still there?)
(7, 2, D:3)
  a poisoned dart
(8, 11, D:3)
  an adder corpse (skeletalised by now)
(10, 15, D:3)
  a +0 dagger
  a +0 chain mail
(27, 18, D:3)
  a +0 dagger