D121212122132313231323233231323223313113313132322331313231323123121   >>    D12121212213231323132323323132322331311331313232233131323132312312   <<    D121212122132313231323233231323223313113313132322331313231323123123   >>      D121212122132313231323233231323223313113313132322331313231323123122   >>