if while for
return nil
remove
from else
then skip
with; is function
var
const type
end begin block
case of

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

[
	["keyword", "if"], ["keyword", "while"], ["keyword", "for"],
	["keyword", "return"], ["keyword", "nil"],
	["keyword", "remove"],
	["keyword", "from"], ["keyword", "else"],
	["keyword", "then"], ["keyword", "skip"],
	["keyword", "with"], ["punctuation", ";"], ["keyword", "is"], ["keyword", "function"],
	["keyword", "var"],
	["keyword", "const"], ["keyword", "type"],
	["keyword", "end"], ["keyword", "begin"], ["keyword", "block"],
	["keyword", "case"], ["keyword", "of"]
]

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

Checks for all keywords.
