Ndim_ := 4:
x1_ := x1:
x2_:= x2:
x3_ := x3:
x4_:= x4:
g11_:= a(x1,x2,x3,x4):
g12_ := b(x1,x2,x3,x4):
g13_ := c(x1,x2,x3,x4):
g14_ := d(x1,x2,x3,x4):
g22_ := f(x1,x2,x3,x4):
g23_:= h(x1,x2,x3,x4):
g24_:= i(x1,x2,x3,x4):
g33_ := j(x1,x2,x3,x4):
g34_ := k(x1,x2,x3,x4):
g44_ := l(x1,x2,x3,x4):
complex_ := {}: