5m Zen
X 2 y 2 8y 16
X 2 y 2 8y 16 pictures 5
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X 2
X 2 y 2 8y 16
x 2 y 2 8y 16 0
x 2 y 2 2x 8y 16 0
x 2 y 2 6x 8y 16 0
x 2 y 2 2xy 8x 8y 16
x 2 y 2 10x 8y 16 0
x 2 y 2 4x 8y 16 0
x 2 8x 8y 16 y 2
x 2 y 2 8y 16
