Order by with dimension hierarchies

My mondrian schema is 

<Table name="dim_question_tbl"/>
<Dimension name="Time" foreignKey="created_date_id_i" highCardinality="false">
<Hierarchy hasAll="true" primaryKey="dim_date_id_i">
<table name="dim_date_tbl" />
<Level name="EnterpriseID" column="dim_enterprise_id_i" uniqueMembers="false" visible="false"/>
<Level name="Year" column="date_year_i" uniqueMembers="false" />
<Level name="Quarter" column="date_qtr_name_c" uniqueMembers="false"/>
<Level name="Month" column="date_month_name_c" uniqueMembers="false"/>
<Level name="Week" column="date_week_i" uniqueMembers="false"/>
</Hierarchy>
</Dimension>

The mdx query generated is :

SELECT
NON EMPTY {[Measures].[Question Count]} ON COLUMNS,
NON EMPTY {Hierarchize({{[Time].[Year].Members}, {[Time].[Month].Members}, {[Time].[Week].Members}})} ON ROWS
FROM [Question Inventory]

Now i have to order the year in the descending order and the month in the normal (calendar) order and week in ascending order.

Could you please let me know the solution

Thanks

Praveen