how to expand turk's head

OK now I got it

just the same method! ;D

2L x 3B ==> 4L x 5B ==> 6L x 7B …
3L x 2B ==> 5L x 4B ==> 7L x 6B …

3L x 4B ==> 5L x 6B ==> 7L x 8B …
4L x 3B ==> 6L x 5B ==> 8L x 7B …

and
2L x 5B ==> 4L x 9B ==> 6L x 13B …
3L x 5B ==> 5L x 9B ==> 7L x 13B …