classes a, b, c, d

types r : a;

s : a;

s : b;

t : c

types [__], {__} : a -> b

vars u : [ r ]; v : { s }

type tuple3 : a -> b -> c -> d

var x : tuple3 r s t

var y : tuple3 r s

type tuple1 : b -> a

type m : (a -> b) -> c

var

type List : a -> b

var w : m List

var o1 : m

var o2 : m tuple1

var o3 : m tuple3

var nt : a -> (b -> c) -> c -> d

var o4 : nt r List s

types s1, r1, t1 < t

types s2 = r2 = t2

type s3 = {x : t . x = x}

%% Classes ---------------------------------------------------------------

a < Type

b < Type

c < Type

d < Type

%% Type Constructors -----------------------------------------------------

List : a -> b

[__] : a -> b

m : (a -> b) -> c

r : a

r1 : c < t

r2 : Type < s2

s : (a, b)

s1 : c < t

s2 : Type

s3 : Type < t

t : c

t1 : c < t

t2 : Type < (r2, s2)

tuple1 : b -> a

tuple3 : a -> b -> c -> d

{__} : a -> b

%% Type Variables --------------------------------------------------------

nt : a -> (b -> c) -> c -> d %(var_1)%

%% Variables -------------------------------------------------------------

o1 : m

o2 : m tuple1

o3 : m tuple3

o4 : nt r List s

u : [ r ]

v : { s }

w : m List

x : tuple3 r s t

y : tuple3 r s

%% Diagnostics -----------------------------------------------------------

### Hint 7.6, not a kind '[r]'

### Hint 7.14, not a kind '{s}'

### Hint 11.7, not a kind 'tuple3 r s t'

### Hint 12.7, not a kind 'tuple3 r s'

*** Error 12.9-12.18, no kind found for 'tuple3 r s'

expected: {Type}

found: {c -> d}

### Hint 18.7, not a kind 'm [__]'

*** Error 18.12, unexpected place '__'

### Hint 22.7, not a kind 'm List'

### Hint 24.8, not a class 'm'

*** Error 24.10, no kind found for 'm'

expected: {Type}

found: {(a -> b) -> c}

### Hint 26.8, not a kind 'm tuple1'

### Hint 26.10-26.12, no kind found for 'tuple1'

expected: {a -> b}

found: {b -> a}

*** Error 26.10-26.12, no kind found for 'm tuple1'

### Hint 28.8, not a kind 'm tuple3'

### Hint 28.10-28.12, no kind found for 'tuple3'

expected: {a -> b}

found: {a -> b -> c -> d}

*** Error 28.10-28.12, no kind found for 'm tuple3'

### Hint 30.5, is type variable 'nt'

### Hint 32.8, not a kind 'nt r List s'

### Hint 32.10-32.20, no kind found for 'List'

expected: {b -> c}

found: {a -> b}

*** Error 32.10-32.20, no kind found for 'nt r List s'

*** Error 36.9, subtyping cycle via 's2' and 'r2'

*** Error 36.12, subtyping cycle via 's2' and 't2'

*** Error 36.12, subtyping cycle via 'r2' and 't2'

### Hint 38.12, rebound variable 'x'