Expressing lack of understanding

A)Expressing lack of understanding:
-I don’t quite follow you.
-could you say that again?
-could repeat that, please?
-I beg your pardon.
-I’m not quite sure I follow you.
-I’m not quite sure I know what you mean
-I beg your pardon, but I don’t quite understand
-I don’t quite see what you mean, I’m afraid
-I’m not so sure I got your point.

B)Asking for clarification
- What do you mean?
-do you mean……?
-could you be more explicit?
-what do you mean by….?
-I’m not quite with you. What do you mean?
-could you put it differently please?
- could you clarify that please?
-could you be more specific please?
-would you elaborate on that please?
-could you possibly give an example,
-I wonder if you could say that in different way.

C )Expressions for clarifying one's point:

-what I’m trying to say is……….
-let me explain that.
-let me put in another way.
-let me express that differently.
-in other words,…….
-let me explain that in more details