I
would have quadruplicated
you
would have quadruplicated
he / she / it
would have quadruplicated
we
would have quadruplicated
you
would have quadruplicated
they
would have quadruplicated
I
would have been quadruplicating
you
would have been quadruplicating
he / she / it
would have been quadruplicating
we
would have been quadruplicating
you
would have been quadruplicating
they
would have been quadruplicating