D121213233313133313132321123231323331323233233313133313231323221   >>    D12121323331313331313232112323132333132323323331313331323132322   <<    D121213233313133313132321123231323331323233233313133313231323223   >>      D121213233313133313132321123231323331323233233313133313231323222   >>