D12121212213231323132323323132322331311331313232233132313231231231111   >>    D1212121221323132313232332313232233131133131323223313231323123123111   <<    D12121212213231323132323323132322331311331313232233132313231231231113   >>      D12121212213231323132323323132322331311331313232233132313231231231112   >>