D1212132333132213231333132213231323331323331321123123231323123221   >>    D121213233313221323133313221323132333132333132112312323132312322   <<    D1212132333132213231333132213231323331323331321123123231323123223   >>      D1212132333132213231333132213231323331323331321123123231323123222   >>