D1212121212131323223313233231323331313232233132323132313233323331   >>    D121212121213132322331323323132333131323223313232313231323332333   <<    D1212121212131323223313233231323331313232233132323132313233323333   >>      D1212121212131323223313233231323331313232233132323132313233323332   >>