p - u---- o y-u---- p - u---- o y-e---- p - u---- o y-u---- p - u---- o y-e e---- w t e y r u p u r u T e r---- e r u r u T r w e---- p - u-- r---- 6 0 w e--0 6 6 0 w e - 0 6 0 w e--0 6 6 0 w e - 0