f g h x l s f j h a d h a- g c k d g k j s f l s- h x l s f j h a d h a- h c k h g d f--f g h x l s f j h a d h a- g c k d g k j s f l s- h x l s f j h a d h a- h c k h g d f--j h g a d l k j h s f x z l k j h c j k l x l f j h g a d l k j h s f x z l k j h c j k l--j h g a d l k j h s f x z l k j h c j k l x l f j h g a d l k j h s f x z l k j h c j k l