W-Y-W-T- W-Y-W-[TO]- [Ws]-O-s-s- S s s D - O- [WO]-O-s-S- [Ts]-O O - O- [WO]-O-s-s- [WS]-[Ys]-[YD]-- Y-E-Y-D- [ED]-D-D-S- [Ys] O O O--- W---O- [Ws]-O-s-s- S s s D - O- [WO]-O-s-S- [Ts]-O O - O- [WO]-O-s-s- [WS]-[Ys]-[YD]-- Y-E-Y-D- [ED]-D-D-S- [Ws] O O O - O- [WO]-O-O-s- [WS] s s D - O- [WO] O O-s-S- [Ws]-O O - O- [WO]-O-s-s- [WS]-s-D---- [WD]-D-D-- [ED]---- [ED]---- [WO]