(some 1)
{ nodes := 2, null := 31, collisions := 2, depth := 2}
(some 1)
none
(some 3)
{ nodes := 2, null := 31, collisions := 1, depth := 2}
none
none
(some 3)
{ nodes := 1, null := 31, collisions := 0, depth := 1}
none
none
(some 3)
none
none
none
{ nodes := 1, null := 32, collisions := 0, depth := 1}