Xiao Wang is a librarian responsible for shelving 9 books labeled A, B, C, D, E, F, G, H, I on a shelf with positions 1 to 9.

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

Question:
Based on the above conditions, please arrange the 9 books from left to right on the bookshelf, i.e. positions 1 through 9. Return your answer with the format <<< a list of strings >>>, one solution is enough.for example:
<<<["A", "B", "C"]>>>
Your answer:
