for i in 1..5
if a == 3
z-index: 1 unless @z-index;
return pair[1] if pair[0] == key for pair in hash
if url == "http://example.com"	// comment

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

[
	["statement", [
		["keyword", "for"],
		" i ",
		["operator", "in"],
		["number", "1"],
		["operator", ".."],
		["number", "5"]
	]],
	["statement", [
		["keyword", "if"],
		" a ",
		["operator", "=="],
		["number", "3"]
	]],
	["property-declaration", [
		["property", ["z-index"]],
		["punctuation", ":"],
		["number", "1"],
		["keyword", "unless"],
		["keyword", "@z-index"],
		["punctuation", ";"]
	]],
	["statement", [
		["keyword", "return"], " pair",
		["punctuation", "["], ["number", "1"], ["punctuation", "]"],
		["keyword", "if"], " pair",
		["punctuation", "["], ["number", "0"], ["punctuation", "]"],
		["operator", "=="], " key ",
		["keyword", "for"], " pair ",
		["operator", "in"], " hash"
	]],
	["statement", [
		["keyword", "if"],
		" url ",
		["operator", "=="],
		["string", "\"http://example.com\""],
		["comment", "// comment"]
	]]
]

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

Checks for statements and keywords.