"Watch tower
and light" by Aziz Khan
4-and now
you should have like on the image indicating below.

5-still with the
cube selected do a duplicate special go to its option box and
do the settings shown on the image, or you could do according
to your axis direction.

6-and then move it
a bit to the side to create a space in between.

7-make 2 more copies
and place them like on the image down.

































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