D121212121213132322331323323132333131323221323133313231313231323222311   >>    D12121212121313232233132332313233313132322132313331323131323132322231   <<    D121212121213132322331323323132333131323221323133313231313231323222313   >>      D121212121213132322331323323132333131323221323133313231313231323222312   >>