D121213233313132233132333131313233313223313231231323132313232211   >>    D12121323331313223313233313131323331322331323123132313231323221   <<    D121213233313132233132333131313233313223313231231323132313232213   >>      D121213233313132233132333131313233313223313231231323132313232212   >>