I
would have tunneled, tunnelled
you
would have tunneled, tunnelled
he / she / it
would have tunneled, tunnelled
we
would have tunneled, tunnelled
you
would have tunneled, tunnelled
they
would have tunneled, tunnelled
I
would be tunneling, tunnelling
you
would be tunneling, tunnelling
he / she / it
would be tunneling, tunnelling
we
would be tunneling, tunnelling
you
would be tunneling, tunnelling
they
would be tunneling, tunnelling
I
would have been tunneling, tunnelling
you
would have been tunneling, tunnelling
he / she / it
would have been tunneling, tunnelling
we
would have been tunneling, tunnelling
you
would have been tunneling, tunnelling
they
would have been tunneling, tunnelling