Sorting with Parent and Child

I would like to do the sorting with PARENT and CHILD function, can it be done without using VBA?

The attachment is copied from a txt file and generated by system.

The 1st level is "Share Documents"
2nd level has a "-"
3rd level has a "--"
4th level has a "---"

Is it possible to use function / formula to resolve this problem?
I would like to sort it with 1st level then 2nd level...but 2nd level must be follow the 1st level to do sorting.
Something like the below

Share document
-A
-B
--B1
--B2
--B3
-C
--C1
---C1i
---C2i
--C2
--C3
-D

Hi Humdingaling,
Thanks for your quick reply,

--HK Office Dec Seminar
--HK Chartered Secretaries
--HK December Conference
the mother object is -Hong Kong Ordinance


Also, in the attachment,

Row 21 is the child of Row 20.
Row 25 is the child of Row 24.
Row 33 to Row 46 is the child of Row 32.

hi Sixthsense,

Thanks, if I just you data>sort, the child will be sorted and will not follow the PARENT object. All text field with "-" will be on top , and "--" will be at the bottom.., I need the "--" follow the PARENT.

Book1.xls

column A is your result list. in column B i removed "-" because some words contain this symbol. other column are formulas.

Thanks, the problem is solved, thanks sixthsense!!