D121212121213132313113313231123313221323132313331311331323132333132233111   >>    D12121212121313231311331323112331322132313231333131133132313233313223311   <<    D121212121213132313113313231123313221323132313331311331323132333132233113   >>      D121212121213132313113313231123313221323132313331311331323132333132233112   >>