D12121323331322331311132313132313233313233313331313231213232331   >>    D1212132333132233131113231313231323331323331333131323121323233   <<    D12121323331322331311132313132313233313233313331313231213232333   >>      D12121323331322331311132313132313233313233313331313231213232332   >>