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 E must be placed in position 5.
2. Book E must be to the right of book A.
3. Book E must be to the left of book I.
4. Book D must be to the right of book A.
5. Book D must be adjacent to book H.
6. Book I must be to the right of book D.
7. Book D must be to the left of book F.
8. Book H must be placed in position 7.
9. Book G must be to the left of book F.
10. Book A must be to the left of book B.

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:
