D11313232233131133132213231323131123313232233133311221123231131   >>    D1131323223313113313221323132313112331323223313331122112323113   <<    D11313232233131133132213231323131123313232233133311221123231133   >>      D11313232233131133132213231323131123313232233133311221123231132   >>