B33113313132313113313223313331323331333132313321133133313331333133313211233121   >>    B3311331313231311331322331333132333133313231332113313331333133313331321123312   <<    B33113313132313113313223313331323331333132313321133133313331333133313211233123   >>      B33113313132313113313223313331323331333132313321133133313331333133313211233122   >>