D1122211211331313331323221123313233313112211232233131333132313112332321   >>    D112221121133131333132322112331323331311221123223313133313231311233232   <<    D1122211211331313331323221123313233313112211232233131333132313112332323   >>      D1122211211331313331323221123313233313112211232233131333132313112332322   >>