\BOOKMARK [1][-]{section.1}{Introduction}{}% 1
\BOOKMARK [1][-]{section.2}{Case 1}{}% 2
\BOOKMARK [1][-]{section.3}{Case 2}{}% 3
\BOOKMARK [1][-]{section.4}{Case 3}{}% 4
\BOOKMARK [1][-]{section.5}{Case 4}{}% 5
\BOOKMARK [1][-]{section.6}{Case 5}{}% 6
\BOOKMARK [1][-]{section.7}{Acknowledgment}{}% 7