B3311331313231311331322331333132313231323132313133313231333132322121323221211   >>    B331133131323131133132233133313231323132313231313331323133313232212132322121   <<    B3311331313231311331322331333132313231323132313133313231333132322121323221213   >>      B3311331313231311331322331333132313231323132313133313231333132322121323221212   >>