X x 0 v t

X x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v t
X x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v t
X x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v tX x 0 v t