D121213233313132233132333131313132313232233131313233313231333131323221121   >>    D12121323331313223313233313131313231323223313131323331323133313132322112   <<    D121213233313132233132333131313132313232233131313233313231333131323221123   >>      D121213233313132233132333131313132313232233131313233313231333131323221122   >>