2 3 4 5 6 7 8 9 10 11 12 13 14 15 16TL B D B D B C C A B C B B A...

Câu 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16TL B D B D B C C A B C B B A C A A