PROGRAMMING:Yanghui triangle
Print n lines of Yanghui triangle, n < 10.
###Input format:
Directly enter a positive integer n less than 10.
###Output format:
Output n rows of Yanghui triangle, each data output occupies 4 columns.
###Input example:
```in
five
```
###Output example:
```out
one
1 1
1 2 1
1 3 3 1
1 4 6 4 1
```
answer：If there is no answer, please comment
###Input format:
Directly enter a positive integer n less than 10.
###Output format:
Output n rows of Yanghui triangle, each data output occupies 4 columns.
###Input example:
```in
five
```
###Output example:
```out
one
1 1
1 2 1
1 3 3 1
1 4 6 4 1
```
answer：If there is no answer, please comment