gmvinput ascii
nodes 20
  0  50 50 0  0  0 50 50  25 25 25  25 75 -25 25  25 99 -49 5  25
  0   0  0 0 50 50 50 50 -25 25 75  25 25  25 75  75 75  75 5 150
  50 50  0 0 50  0  0 50  25 75 25 -25 25  25 99 -49 25  25 5  25
cells 4
tet 4
  5 11 8 15
tet 4
  6 7 11 16
tet 4
  8 7 11 17
tet 4
  5 6 11 18
variable
pressure 1
endvars
endgmv
