X 2t 0 2t 2

X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2X 2t 0 2t 2