D233313133313221323132322331311112211232322331323132311221123121221   >>    D23331313331322132313232233131111221123232233132313231122112312122   <<    D233313133313221323132322331311112211232322331323132311221123121223   >>      D233313133313221323132322331311112211232322331323132311221123121222   >>