e-e--- W-W--- e-e--- W-W--- [ef]-e - l k l [Wf]-W - l k l [ef]-e - l k l [qz]-[qx]---z [ek]-[el]---z [Wk]-[Wl]---z [ek]-[el] - f k j [qH]-[qg]--q- [6u] 0 t - s a s [%u] 0 t - s a s [6u] 0 t - s a s [4d] 8 [Wf]---d [6a] 0 [ts]--0 d [%a] 0 [ts]--0 d [6a] 0 [ts] - u [0a] p [4O] 8 [Wi]--O- [ep]-e--- W-W - x k l [ef]-e--- q-q - f a s [ep]