If(Or(And Formula Structure

[berger01]

I am having problems figuring out the correct structure for this formula. I think my parentheses are not correct. Hope someone can assist. Thanks in advance.

=If(Or(And(N2=2,O2=2)), And(N2=2,O2=3)),"2",If(Or(And(N9=3,O2=2)),And(N2=3,O2=1)),"F3",If(Or(And If(And(N2=1,O2=1))),And(N2=1,O2=2)),And(N2=1,O2=3)),"1",If(And(N2=3,O2=3)),"3", If(And(N2=2,O2=1)),"F2","N/A")))