D121212121213132313113313231123313221323132313331311331323133313232233111   >>    D12121212121313231311331323112331322132313231333131133132313331323223311   <<    D121212121213132313113313231123313221323132313331311331323133313232233113   >>      D121212121213132313113313231123313221323132313331311331323133313232233112   >>