B33113313132313113313223313331323221211111211111333132313223111   >>    B3311331313231311331322331333132322121111121111133313231322311   <<    B33113313132313113313223313331323221211111211111333132313223113   >>      B33113313132313113313223313331323221211111211111333132313223112   >>