D1212132333132213231333132213231323331323331321123123231323132321   >>    D121213233313221323133313221323132333132333132112312323132313232   <<    D1212132333132213231333132213231323331323331321123123231323132323   >>      D1212132333132213231333132213231323331323331321123123231323132322   >>