and
as
assert
begin
bool
class
constraint
do
done
downto
else
end
exception
external
float
for
fun
function
if
in
include
inherit
initializer
int
lazy
let
method
module
mutable
new
nonrec
object
of
open
or
private
rec
string
switch
then
to
try
when
while
with
type

----------------------------------------------------

[
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	["keyword", "while"],
	["keyword", "with"],
	["keyword", "type"]
]

----------------------------------------------------

Checks for keyword.
