D2311233132233131323132333131313232233132321133132313112211232322121   >>    D231123313223313132313233313131323223313232113313231311221123232212   <<    D2311233132233131323132333131313232233132321133132313112211232322123   >>      D2311233132233131323132333131313232233132321133132313112211232322122   >>