D12121212121313232233132332313231333132313233313113313232213231232321   >>    D1212121212131323223313233231323133313231323331311331323221323123232   <<    D12121212121313232233132332313231333132313233313113313232213231232323   >>      D12121212121313232233132332313231333132313233313113313232213231232322   >>