B33113313132313113313223313331323331323321133133313331323132313233313232213111   >>    B3311331313231311331322331333132333132332113313331333132313231323331323221311   <<    B33113313132313113313223313331323331323321133133313331323132313233313232213113   >>      B33113313132313113313223313331323331323321133133313331323132313233313232213112   >>