B3311331313231311331322331333131133133313231133133313232213231323121   >>    B331133131323131133132233133313113313331323113313331323221323132312   <<    B3311331313231311331322331333131133133313231133133313232213231323123   >>      B3311331313231311331322331333131133133313231133133313232213231323122   >>