X4 x2 1 x2 x 1

X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1
X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1
X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1X4 x2 1 x2 x 1