Although no carpet is completely stain proof, most modern carpets have been treated to render them stain resistant.
(no carpet; is completely; stain proof) (most modern carpets; have been treated; to render them stain resistant) (most modern carpets; to render; them; stain resistant)
no carpet most modern carpets most modern carpets
is completely have been treated to render
stain proof
to render them stain resistant
them stain resistant