Script help with selecting objects

Hello, im making a research project and for it i am making a mini flash game (not very complicated).
Im very rusty in actionscript and i would appreciate if someone would be able to help me do this:

I want to make it so that if you select A B C D E (in w.e. order) that it takes you to a certain scene, But if you select any of F G H I J (in w.e. order) then it takes you to another scene.

The letters are just representations of images i will be using and i need it so that once 5 letters are selected and the person presses go THEN it goes to the correct scene ( not like if they press any of F G H I J then it goes to the scene right away).

Sorry if this is confusing but if someone could help me out i would really appreciate it