D12121212213231323132323323132322331311331313232233131323221111   >>    D1212121221323132313232332313232233131133131323223313132322111   <<    D12121212213231323132323323132322331311331313232233131323221113   >>      D12121212213231323132323323132322331311331313232233131323221112   >>