D12121323331311112113313232112323132322331323132313232213231111   >>    D1212132333131111211331323211232313232233132313231323221323111   <<    D12121323331311112113313232112323132322331323132313232213231113   >>      D12121323331311112113313232112323132322331323132313232213231112   >>