macro-replacement with quotes

[Phillip Lord]

Is it possible to build a list within a macro which contains backquote,
quote or comma symbols in it?

Specifically, I was thinking of building a macro which expands to a
pcase form, but I need the ` symbol in the expansion.

For example, say I have a list

'(a b c)

which I want to expand to

`(,a ,b ,c)

Or in full I want to expand something like

(((a) a)
 ((a b) a b)
 ((a b c) a b c))

into

(pcase x
  (`(,a) a)
  (`(,a ,b) a b)
  (`(,a ,b ,c) a b c))



Phil