D121212121213132313113313231123313231323132322133313233313233313133313221   >>    D12121212121313231311331323112331323132313232213331323331323331313331322   <<    D121212121213132313113313231123313231323132322133313233313233313133313223   >>      D121212121213132313113313231123313231323132322133313233313233313133313222   >>