D1122211211331313331323221123313233313112211232233131333131322331   >>    D112221121133131333132322112331323331311221123223313133313132233   <<    D1122211211331313331323221123313233313112211232233131333131322333   >>      D1122211211331313331323221123313233313112211232233131333131322332   >>