F x x 2 2x

F x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2x
F x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2x
F x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2xF x x 2 2x