Not only ... but also

Yes, I know this question has been asked a gazillion times. But I haven't found the answer I am looking for, so I decided to post my own question in hopes that someone can help with it.

Many questions in the past deal with the straight-forward format of "not only but also"
e.g.
subject + v + not only + object1, but also
or subject + not only + v1, but also v2

I wonder what the right format is for the following scenario

Not only do(es) S+V, but S also +V ?
or Not only do(es) S+V, but S +V ?
or Not only do(es) S+V, S also +V ?
eg.
(a) "Not only does Spain have the right natural resources, but Spain also has enough manpowers to..." ?
(b) "Not only does Spain have the right natural resources, (but) Spain also has enough manpowers to ..." ?
(c) "Not only does Spain have the right natural resources, but Spain (also) has enough manpowers to ..." ?

Somehow I feel like maintaining the "also" but omitting the "but", although I have the impression the correct format should be "not only, but (also)"

Any help here ? Thanks a lot.