2 π 1 +

2 π 4 0 +

2 π 3

2 π 2 0

2 π 2 0

2 π 4 0

2 π 1 +

8 ( π 1 + , π 1 + )

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2 π 4 0 +

8 ( π 4 0 + , π 1 + )

8 ( π 4 0 + , π 4 0 + )

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2 π 3

8 ( π 3 , π 1 + )

8 ( π 3 , π 4 0 + )

8 ( π 3 , π 3 )

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2 π 2 0

8 ( π 2 0 , π 1 + )

8 ( π 2 0 , π 4 0 + )

8 ( π 2 0 , π 3 )

8 ( π 2 0 , π 2 0 )

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2 π 2 0

8 ( π 2 0 , π 1 + )

8 ( π 2 0 , π 4 0 + )

8 ( π 2 0 , π 3 )

8 ( π 2 0 , π 2 0 )

8 ( π 2 0 , π 2 0 )

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2 π 4 0

8 ( π 4 0 , π 1 + )

8 ( π 4 0 , π 4 0 + )

8 ( π 4 0 , π 3 )

8 ( π 4 0 , π 2 0 )

8 ( π 4 0 , π 2 0 )

8 ( π 4 0 , π 4 0 )