_:b10816 _:b10817 . _:b10816 . _:b10822 . _:b10818 _:b10819 . _:b10819 _:b10820 . _:b10821 . _:b10818 . _:b10820 _:b10821 . _:b10821 _:b10822 . _:b10819 . _:b10820 . _:b10822 . _:b10817 . _:b10817 _:b10818 .