o s - d f - d g - f d - s a - p o - i u---- o s - d f - d g - f d - s a - p o-d- s--- o p a s s s d f f f d g g g f d d d s d s a p a p o i u--- o p a s s s d f f f d g g g f d d d s d s a p a p o d s---- o s - d f - d g - f d - s a - p o - i u---- o s - d f - d g - f d - s a - p o-d- s