"Matching pairs" game with variants

I need a Flash game on "matching pairs" (or "memory game") theme. Propositions and requiremets: 1) Written in ActionScript 3. 2) Well commented code for easy future adjustments. 3) Images or texts for every card of this game are in XML. 4) Game will have 4 variants: 4a) Simple typical "matching pairs" mechanism, player looks for pairs by turning pairs and is awarded acording to time of finish. See example: [login to view URL] 4b) Like 4a, but player see all card positions in the beggining, and is awarded for as little as possible mistakes on his way to finish. 4c) Like 4a, but when a pair is chosen, player decides if it is OK and i awarded according to his decision. 4d) Like 4a, but when belonging cards are turned, player drag one of them to some area and is awarded if the decision was right. 5) No need for graphics, simple design is enough, I will make the rest. 6) ASAP ;o)