- / *

- /

- / * - ( H , p1)- ( F, p2)- ( P, p3 )

- /

- / *xy-y-xz-zFHPVIIIIIIIIVVIIIVIVI

xyzI+x+y+zII+x-y+zIII+x-y-zIV+x+y-zV-x+y+zVI-x-y+zVII-x-y-zVIII-x+y-z

- /

- / *xy-y-xz-zF

H

P

- /

- / *-yy-xO= zxxy-y-xz-zH-

- /

- / *xy-y-xz-zFz-z-xO= yx-

- /

- / *z-zyO= x-yxy-y-xz-zP-

- /

- / *xy-y-xz-zFHPz=z=-yy=-z=-z-x=-x=yO= z=y=xx=x=-y

- /

- / *

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