B3311331313231311331322331333132313132313331323223313231323132322132121   >>    B331133131323131133132233133313231313231333132322331323132313232213212   <<    B3311331313231311331322331333132313132313331323223313231323132322132123   >>      B3311331313231311331322331333132313132313331323223313231323132322132122   >>