B3311331313231311331322331333132313231323331333131123313331323232213111   >>    B331133131323131133132233133313231323132333133313112331333132323221311   <<    B3311331313231311331322331333132313231323331333131123313331323232213113   >>      B3311331313231311331322331333132313231323331333131123313331323232213112   >>