D12121212121313233313232313231323123231323223313113313232233132231111   >>    D1212121212131323331323231323132312323132322331311331323223313223111   <<    D12121212121313233313232313231323123231323223313113313232233132231113   >>      D12121212121313233313232313231323123231323223313113313232233132231112   >>