I
would have overlengthened
you
would have overlengthened
he / she / it
would have overlengthened
we
would have overlengthened
you
would have overlengthened
they
would have overlengthened
I
would have been overlengthening
you
would have been overlengthening
he / she / it
would have been overlengthening
we
would have been overlengthening
you
would have been overlengthening
they
would have been overlengthening