∑ i  ∑ j  | F i  ∩ G j  | | F i  ∩ G ¯  j  | | F ¯  i  ∩ G ¯  j  | | F ¯  i  ∩ G j  |           ( 6 )    MathType@MTEF@5@5@+=feaafiart1ev1aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8akY=wiFfYdH8Gipec8Eeeu0xXdbba9frFj0=OqFfea0dXdd9vqai=hGuQ8kuc9pgc9s8qqaq=dirpe0xb9q8qiLsFr0=vr0=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@5F95@