foo|bar|baz|bin|1
foo|"bar"|baz|bin|2
foo|"bar|bar"|baz|bin|3
foo|"bar""|bar"|baz|bin|4
foo|"bar""""|bar"|baz|bin|5
|""|baz||6
||||7
foo||||8
|""|||9
"f"||||"10"
"f"|||",bin"|"11"
"f"|||"bin,"|"11"