D1122211211331313331323221123313233313112211232233131313231323221   >>    D112221121133131333132322112331323331311221123223313131323132322   <<    D1122211211331313331323221123313233313112211232233131313231323223   >>      D1122211211331313331323221123313233313112211232233131313231323222   >>