PROGRAMMING:I love full platoon

Fujiwara secretary is doing a simple math problem, give a number n, the title hope Fujiwara Secretary output from the capital letter a beginning n letters of the full arrangement, lovely Fujiwara Secretary hope you to help him complete
###Input format:
Enter the number n (n < = 9)
###Output format:
Output the complete arrangement of n letters starting from capital letter a (output in dictionary order)
###Input example:
Here is a set of inputs. For example:
```in
three
```
###Output example:
The corresponding output is given here. For example:
```out
ABC
ACB
BAC
BCA
CAB
CBA
```







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