D212213231311233131313331322331311331313232233132322121211113313231333113121   >>    D21221323131123313131333132233131133131323223313232212121111331323133311312   <<    D212213231311233131313331322331311331313232233132322121211113313231333113123   >>      D212213231311233131313331322331311331313232233132322121211113313231333113122   >>