{
  a: [0, 1, 2] contains [1, 2],
  b: [0, 1, 2] contains 1,
  c: in0.a contains in1.a,
  d: in0.b contains in1.b,
  e: in0.a contains [1, 2],
  f: in0.b contains 1,
  g: [0, 1, 2] contains in1.a,
  h: [0, 1, 2] contains in1.b,
  i: [{a: "a"}] contains {a: "a"},
  j: [{a: "a"}] contains {b: "a"},
  k: [{a: "a"},{b: "a"},{c: "a"}] contains [{a: "a"},{c: "a"}]
}