qualified:name: foo=1 bar=2
 key  22:25                        ^-^
 sep  25:26                           ^
 num  26:27                            ^
 row  26:27                            ^
pair  22:27                        ^---^
 key  16:19                  ^-^
 sep  19:20                     ^
 num  20:21                      ^
 row  20:21                      ^
pair  16:21                  ^---^