Which of the following two ways to write a patent book is better?

First of all, the scheme in the claims can be protected. If the features in the specification are necessary or important, it is suggested to embody them in the claims. At this point, the right 2 written for the first time may not be clear enough

Second, claiming 10 will generate additional official expenses, so it is better to fill in 10. In this regard, there are only seven items in the first writing.

Third, the second formulation may be clearer, but it can be more concise to save weight. For example, right 2 can be 2a: B is provided with at least one of C, D, E and F, or A is provided with at least one of C, D, E and F (original right 5). For another example, you can also adjust the subordinate order to avoid the problem of multiple references. 1, 2a, 8, 3, 4.