B3311331313231311331322331333131133133313111333133313331323221311211331   >>    B331133131323131133132233133313113313331311133313331333132322131121133   <<    B3311331313231311331322331333131133133313111333133313331323221311211333   >>      B3311331313231311331322331333131133133313111333133313331323221311211332   >>