(1)
(1-1)
(1-2)
(2)
(2-1)
(2-2)
(1)
(1-1)
(1-2)
(2)
(2-1)
(2-2)
(1)
(1-1)
(1-2)
(2)
(2-1)
(2-2)
(1)
(1-1)
(1-2)
(2)
(2-1)
(2-2)