IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a stone
(0, 1, D:1)
  3 stones
(0, 2, D:1)
  a stone
(1, -3, D:1)
  2 stones
(1, 0, D:1)
  4 stones
(1, 1, D:1)
  4 stones
(1, 2, D:1)
  a stone
(2, -2, D:1)
  3 stones
(2, -1, D:1)
  2 stones
(2, 1, D:1)
  4 stones
(2, 3, D:1)
  a stone
(2, 5, D:1)
  a +0 dagger
  6 stones
(3, -3, D:1)
  2 stones
(3, -1, D:1)
  4 stones
(3, 0, D:1)
  2 stones
(3, 2, D:1)
  a stone
(4, -2, D:1)
  a stone
(4, -1, D:1)
  3 stones
(4, 1, D:1)
  a stone
(4, 2, D:1)
  3 stones
(6, -1, D:1)
  a stone
(8, 0, D:1)
  8 stones
(12, 3, D:1)
  a +0 ring mail
(17, 6, D:1)
  3 boomerangs
(21, 1, D:1)
  a +0 chain mail of fire resistance
(22, -7, D:1)
  5 stones
(23, -7, D:1)
  5 stones
(27, 17, D:1)
  a +0 club
(41, -3, D:1)
  a +0 robe
(45, 10, D:1)
  a +0 dagger
(48, 25, D:1)
  a +0 hand axe
(58, 13, D:1)
  a +0 dagger

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 dagger
  a goblin corpse
(15, 2, D:2)
  5 stones
(18, 5, D:2)
  an adder corpse
(18, 10, D:2)
  a +0 scythe
  a +0 robe
  the human corpse of Sigmund
(27, 5, D:2)
  a +0 quarterstaff
(43, 8, D:2)
  a ring of poison resistance {rPois, !d}
(44, 23, D:2)
  a +0 scale mail
(45, 14, D:2)
  5 stones
(57, 31, D:2)
  a +0 leather armour

Level 3 of the Dungeon
(0, 0, D:3)
  a potion of mutation