B1B1B1?B1E-5B1B1B1??B1?B1E-5?B1?B1?B1?B1YXLB-C-3POYXLB-C-3POYXLB-C-3POYXLB-C-3POYXLB-C-3POYXLB-C-3PO........................（..）nnn~（..）nnn~（..）nnn~（..）nnn~??