D11221123122332313123231323223313232212111133131322132313231323132322311   >>    D1122112312233231312323132322331323221211113313132213231323132313232231   <<    D11221123122332313123231323223313232212111133131322132313231323132322313   >>      D11221123122332313123231323223313232212111133131322132313231323132322312   >>