D212213231311233131313331322331311331313232233132322121211111323221   >>    D21221323131123313131333132233131133131323223313232212121111132322   <<    D212213231311233131313331322331311331313232233132322121211111323223   >>      D212213231311233131313331322331311331313232233132322121211111323222   >>