D3313131122211211331323221123313232233133313232121213231323132313231323221211   >>    D331313112221121133132322112331323223313331323212121323132313231323132322121   <<    D3313131122211211331323221123313232233133313232121213231323132313231323221213   >>      D3313131122211211331323221123313232233133313232121213231323132313231323221212   >>