overwrite and depth-0 locks

Let's say you have resources /a/b and /c/d.  There is a
depth-0 lock
on collection /c

Of the following cases, which ones require the locktoken for
the lock on /c?

1.
COPY /a/b
Destination: /c/d
Overwrite: T

2.
MOVE /a/b
Destination: /c/d
Overwrite: T

3.
REBIND /c
Overwrite: T

<D:rebind xmlns="D
AV:">
   <D:segment>d</D:segment>
   <D:href>/a/b</D:href>
</D:rebind>

4.
BIND /c
Overwrite: T

<D:bind xmlns="D
AV:">
   <D:segment>d</D:segment>
   <D:href>/a/b</D:href>
</D:bind>

I believe #1 does not require the locktoken.  I'm not sure
about the other ones.

Thanks for the help.

-Tim