-------------------------------------
|                                   |
| &subject = "((a+b)-delta)/(c*d))" |
|                          |        |
-------------------------------------
-------------------------
|                       |
| &subject = "abcdefgh" |
|                     | |
-------------------------
------------------------------
|                            |
| &subject = "abc\tdef\nghi" |
|                     |      |
------------------------------
------------------------
|                      |
| &subject = "abcdefg" |
|              |       |
------------------------
------------------------
|                      |
| &subject = "abcdefg" |
|               |      |
------------------------
------------------------
|                      |
| &subject = "abcdefg" |
|                |     |
------------------------
------------------------
|                      |
| &subject = "abcdefg" |
|                 |    |
------------------------
------------------------
|                      |
| &subject = "abcdefg" |
|                  |   |
------------------------
------------------------
|                      |
| &subject = "abcdefg" |
|                   |  |
------------------------
------------------------
|                      |
| &subject = "abcdefg" |
|                    | |
------------------------
------------------------
|                      |
| &subject = "g\f\000" |
|              |       |
------------------------
------------------------
|                      |
| &subject = "g\f\000" |
|                |     |
------------------------
------------------------
|                      |
| &subject = "g\f\000" |
|                    | |
------------------------