o-t-t-t- o-t-t-f- d s a p o-i- u-i-o-- o-t-t-t- o-t-t-f- d s a p o-O- p---- s-[tp]-[tp]-[tp]- d-[ra]-[ra]-[ra]- [rd]-[oa]-[rd]-[oa]- [tf]-[us]-[tf]-[us]- o-t-t-t- o-t-t-f- d s a p o-a- s--[tl]