Xiao Wang is a librarian responsible for shelving 7 books labeled A, B, C, D, E, F, G on a shelf with positions 1 to 7.

The constraints are:
1. Book F cannot be placed in position 2.
2. Book F must be placed in position 4.
3. Book D must be to the right of book A.
4. Book B must be to the left of book G.
5. Book D must be to the right of book G.
6. Book F must be to the left of book G.
7. Book G must be to the left of book D.
8. Book A must be to the left of book E.
9. Book G must be to the left of book C.

Question:
Based on the above conditions, please arrange the 7 books from left to right on the bookshelf, i.e. positions 1 through 7. Return your answer with the format <<< a list of strings >>>, one solution is enough.for example:
<<<["A", "B", "C"]>>>
Your answer:
