retrieving parent(ascendants)

i have a dimension named 'sdoc' which has 2 members
1) symptom word( first hierarchical level) and
2) doc id (second hierarchical level)

more than one 'symptom word' can have the same 'doc id'.
i want to know which all symptom words have a particular doc id (say 10.)
if i give [10].parent then it returns only the first parent whereas it actually has more than one parent.
how to retrieve all the parents.more than one 'symptom word' can have the same 'doc id'. So...there is a one-to-many relationship between 'doc id' and 'symptom word'?
if i give [10].parent then it returns only the first parent whereas it actually has more than one parent.So...there is a one-to-many relationship between 'symptom word' and 'doc id'?

Huh?

In database relationships, records normally have only one parent...

Please post the DDL code for the tables you are referencing, along with the SQL code you have tried.