D1212121212131323223313233231323133313231323331311331323131133132213131   >>    D121212121213132322331323323132313331323132333131133132313113313221313   <<    D1212121212131323223313233231323133313231323331311331323131133132213133   >>      D1212121212131323223313233231323133313231323331311331323131133132213132   >>