B3311331313231311331322331333132313233313233313133313331323223312311   >>    B331133131323131133132233133313231323331323331313331333132322331231   <<    B3311331313231311331322331333132313233313233313133313331323223312313   >>      B3311331313231311331322331333132313233313233313133313331323223312312   >>