Transform {
  translation -1.5 -1.5 0
  children [
          Shape { 
                  geometry DEF nurb NurbsSurface {
                          uOrder 4 
                          vOrder 4 
                          uTessellation 50
                          uTessellation 51
                          uDimension 4 
                          vDimension 4 
                          controlPoint[ 0 0 0, 1 0 0, 2 0 0, 3 0 0,
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                           }