DEVICE UNIT #         3         2         1         0
                 +---------+---------+---------+---------+
                 | OWNER # | OWNER # | OWNER # | OWNER # |
                 +---------+---------+---------+---------+
                 | OWNER # | OWNER # | OWNER # | OWNER # |
                 +---------+---------+---------+---------+
DEVICE UNIT #         7         6         5         4