D11313232233131133132213231323131123313231311331313331323223313233121   >>    D1131323223313113313221323132313112331323131133131333132322331323312   <<    D11313232233131133132213231323131123313231311331313331323223313233123   >>      D11313232233131133132213231323131123313231311331313331323223313233122   >>