B3311331313231311331322331333132313132313331323223313331323132312221   >>    B331133131323131133132233133313231313231333132322331333132313231222   <<    B3311331313231311331322331333132313132313331323223313331323132312223   >>      B3311331313231311331322331333132313132313331323223313331323132312222   >>