Description

In 2018,Jiangsu provincial public security network security team’s official micro-blog "Jiangsu net police" issued a "2018 criminal investigation subject reasoning test questions"

But just think by pen and paper is too hard, so lmh decide to write a program to solve this problem nicely. The following is the original problem. lmh is already know the answer, can you?

(These question all are one answer)

(Math means the –th question, like “2” means “the second question”)

1. The answer of this question is()

A.A  B.B  C.C  D.D

2. The answer of the fifth question is()

A.C  B.D  C.A  D.B

3. Which of the following option’s answer is different from the other three options’ answer?()

A. 3  B. 6  C.2  D. 4

4. Which two following options’ answer are same?()

A. 1 and 5  B.2 and 7  C.1 and 9  D.6 and 10

5. Which the following option’s answer is the same with this question’s answer?()

A.8  B.4  C.9  D.7

6. Which two following options’ answer is the same with the eighth question’s answer?()

A.2 and 4  B.1 and 6  C.3 and 10  D.5 and 9

7.In these ten questions, the least selected options is()

A.C  B.B  C.A  D.D

8.Which of the following option’s answer and the first question’s answer are not adjacent in the alphabet?()

A.7  B.5  C.2  D.10

9.It is known that the two statement of “the first question’s answer is the same with the sixth question’s answer” and “the X-th question’s answer is the same with the fifth question’s answer”, one is true, and another is false. So X is()

A.6  B.10  C.2  D.9

10.In these ten questions, what is the difference between the maximum selected options and the least selected options of A,B,C,D four letters?()

A.3  B.2  C.4  D.1

Input

(No Input)

Output

These ten questions' answer.(Output like "AAAAAAAAAA")

Sample Input

(No Input)

Sample Output

(secret)