D12121212121313232233132332313231323133313233313221323132322231   >>    D1212121212131323223313233231323132313331323331322132313232223   <<    D12121212121313232233132332313231323133313233313221323132322233   >>      D12121212121313232233132332313231323133313233313221323132322232   >>