B3311331313231311331322331333132313331322331323133313233313232213311   >>    B331133131323131133132233133313231333132233132313331323331323221331   <<    B3311331313231311331322331333132313331322331323133313233313232213313   >>      B3311331313231311331322331333132313331322331323133313233313232213312   >>