Use this Ad Hoc report to pull all posted DAs with Type 'B' (dual agency - both sides of the transaction) within a specific date range:
LIST DA WITH CLOSE_PERIOD BETWEEN 201101 AND 201112 AND WITH STATUS = 'P' AND WITH TYPE = 'B' STATUS FULL_STREET PRICE
Replace the bold dates with the four digit year and two digit month that you want the report to start and finish in.