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