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Bài 13
1D 2B
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Okay!
Bài 5
1B 2D
Oops!
Okay!
Bài 4
1C 2A
Oops!
Okay!
Bài 9
1A 2B 3C
Oops!
Okay!
Bài 4
1D 2B
Oops!
Okay!
Bài 6
1A 2C
Oops!
Okay!
Bài 15
1A 2C
Oops!
Okay!
Bài 12
1B 2C 3C 4D
Oops!
Okay!
Bài 13
1A 2C
Oops!
Okay!
Bài 4
1A 2B
Oops!
Okay!
Bài 10
1B 2B 3B 4A
Oops!
Okay!
Bài 7
1B 2C
Oops!
Okay!
Bài 15
1A 2C
Oops!
Okay!
Bài 7
1A 2D 3A
Oops!
Okay!
Bài 8
1C 2A 3D 4B
Oops!
Okay!
Bài 14
1A 2C 3A
Oops!
Okay!
Bài 11
1B 2C 3D
Oops!
Okay!
Bài 5
1C 2D
Oops!
Okay!
Bài 6
1B 2A 3B
Oops!
Okay!
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