B33113313132313113313223313331323132333132332313331333133313232211211   >>    B3311331313231311331322331333132313233313233231333133313331323221121   <<    B33113313132313113313223313331323132333132332313331333133313232211213   >>      B33113313132313113313223313331323132333132332313331333133313232211212   >>