F x g x

F x g xF x g xF x g xF x g x
F x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g x
F x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g x
F x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g x
F x g xF x g xF x g xF x g xF x g xF x g xF x g xF x g x