[null,"null"]
[null,"null"]
["#NULL!","e"]
[false,"b"]
[true,"b"]
["FALSE","s"]
["TRUE","s"]
["","s"]
["ABC","s"]
["123","n"]
[123,"n"]
[0.123,"n"]
["-123","n"]
["1.23E4","n"]
["-1.23E4","n"]
["1.23E-4","n"]
["000123","s"]
["=123","f"]
["#DIV\/0!","e"]