D212213231311233131313331322331311331313232233132322121211113312111   >>    D21221323131123313131333132233131133131323223313232212121111331211   <<    D212213231311233131313331322331311331313232233132322121211113312113   >>      D212213231311233131313331322331311331313232233132322121211113312112   >>