G 1

G 2

G 3

G 4

A 1

( s 4 , 0 ) , ( s 1 , 0 )

( s 5 , 0 ) , ( s 3 , 0 )

( s 5 , 0 ) , ( s 3 , 0 )

( s 4 , 0 ) , ( s 2 , 0 )

A 2

( s 6 , 0 ) , ( s 1 , 0 )

( s 5 , 0 ) , ( s 3 , 0 )

( s 5 , 0 ) , ( s 3 , 0 )

( s 6 , 0 ) , ( s 2 , 0 )

A 3

( s 5 , 0 ) , ( s 2 , 0 )

( s 4 , 0 ) , ( s 2 , 0 )

( s 4 , 0 ) , ( s 2 , 0 )

( s 5 , 0 ) , ( s 3 , 0 )

A 4

( s 6 , 0 ) , ( s 1 , 0 )

( s 4 , 0 ) , ( s 3 , 0 )

( s 6 , 0 ) , ( s 1 , 0 )

( s 4 , 0 ) , ( s 4 , 0 )