I
would have dematerialized
you
would have dematerialized
he / she / it
would have dematerialized
we
would have dematerialized
you
would have dematerialized
they
would have dematerialized
I
would have been dematerializing
you
would have been dematerializing
he / she / it
would have been dematerializing
we
would have been dematerializing
you
would have been dematerializing
they
would have been dematerializing