D121213233313132233132333131313132313232233131313233313231323212221   >>    D12121323331313223313233313131313231323223313131323331323132321222   <<    D121213233313132233132333131313132313232233131313233313231323212223   >>      D121213233313132233132333131313132313232233131313233313231323212222   >>