B3311331313231311331322331333131133133313231113232233131113233311   >>    B331133131323131133132233133313113313331323111323223313111323331   <<    B3311331313231311331322331333131133133313231113232233131113233313   >>      B3311331313231311331322331333131133133313231113232233131113233312   >>