{
  "0"  : "\"0\"",
  "5"  : "\"5\"",
  "05" : "\"05\"",
  "5.0": "\"5.0\"",
  "5.1": "\"5.1\"",
  "5." : "\"5.\"",
  "x"  : "\"x\"",
  "len-6": "\"abcdef\"",
  "len-9": "\"abcdefghi\"",
  "false": "\"false\"",
  "true" : "\"true\"",
  "null" : "\"null\"",
  "empty": "\"\""
}