D - g D S s - P s- P O P s D d d-D-- D-D-s- g G g D S s S-S-P- D g D S s P s-s-S s s-P-s P s-O-P- P--- D-D-s- g G g D S- s S P-- s--- D-D-s- g - D S- s H H-h- H