""
"fo\"obar"
"foo\
bar"
''
'fo\'obar'
'foo\
bar'

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

[
	["string", "\"\""],
	["string", "\"fo\\\"obar\""],
	["string", "\"foo\\\r\nbar\""],
	["string", "''"],
	["string", "'fo\\'obar'"],
	["string", "'foo\\\r\nbar'"]
]

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

Checks for strings.