D121213233313133313132321123231323331323233233313133313231333132333132322221   >>    D12121323331313331313232112323132333132323323331313331323133313233313232222   <<    D121213233313133313132321123231323331323233233313133313231333132333132322223   >>      D121213233313133313132321123231323331323233233313133313231333132333132322222   >>