a = 1 b = 1
d = True {1}
e = False {"a": 2}
f = 0.1 (1)
g = {x = 1} Class {name = Str; age = Nat}

[1, 2, 3] {1}
[1, 2, 3] {"c": 3}
[1, 2, 3] (1)
[1, 2, 3] {x = 1}

{1, 2, 3} {1}
{1, 2, 3} {"c": 3}
{1, 2, 3} (1)
{1, 2, 3} {x = 1}

{x = 1} {1}
{x = 1} {"c": 3}
{x = 1} (1)
{x = 1} {x = 1}

{"a": 1, "b": 2} {1}
{"a": 1, "b": 2} {"c": 3}
{"a": 1, "b": 2} (1)
{"a": 1, "b": 2} {x = 1; y = 1}

{1, 2, 3} g = 1
(1, 2, 3) {1}
(1, 2, 3) {"c": 3}
(1, 2, 3) {x = 1}

Class {name = Str; age = Nat} z = 1

# different error
[1, 2, 3] e = 1
{"a": 1, "b": 2} h = 1
{x = 1} i = 1
(1, 2, 3) j = 1

h = 1 [0, 1]
[1, 2, 3] [0, 1]
{"a": 1, "b": 2} [0, 1]
{x = 1} [0, 1]
(1, 2, 3) [0, 1]

# passed: index access, but invalid
{x = 1} [0]
(1, 2, 3) [0]
Class {name = Str; age = Nat} [0]

# passed: as args
[2, 2, 3] Class {name = Str; age = Nat}
{1, 2, 3} Class {name = Str; age = Nat}
{"a": 1, "b": 2} Class {name = Str; age = Nat}
(1, 2, 3) Class {name = Str; age = Nat}

Class {name = Str; age = Nat} [1, 2, 2]
Class {name = Str; age = Nat} {1, 2, 3}
Class {name = Str; age = Nat} {"c": 3, "d": 4}
Class {name = Str; age = Nat} (1, 2, 3)
Class {name = Str; age = Nat} Class {x = Int; y = Int}

block =
    a = 1 b = 1
    c = "Hello, world" [0] # is it possible to parse?
    d = True {1}
    e = False {"a": 2}
    g = {x = 1} Class {name = Str; age = Nat}

    [1, 2, 3] {1}
    [1, 2, 3] {"c": 3}
    [1, 2, 3] (1)
    [1, 2, 3] {x = 1}

    {1, 2, 3} [1]
    {1, 2, 3} {1}
    {1, 2, 3} {"c": 3}
    {1, 2, 3} (1)
    {1, 2, 3} {x = 1}

    {x = 1} {1}
    {x = 1} {"c": 3}
    {x = 1} (1)
    {x = 1} {x = 1}

    {"a": 1, "b": 2} {1}
    {"a": 1, "b": 2} {"c": 3}
    {"a": 1, "b": 2} (1)
    {"a": 1, "b": 2} {x = 1; y = 1}

    {1, 2, 3} g = 1
    (1, 2, 3) {1}
    (1, 2, 3) {"c": 3}
    (1, 2, 3) {x = 1}

    Class {name = Str; age = Nat} z = 1