D121212122132313231323233231323223313113313132322331323123232321   >>    D12121212213231323132323323132322331311331313232233132312323232   <<    D121212122132313231323233231323223313113313132322331323123232323   >>      D121212122132313231323233231323223313113313132322331323123232322   >>