
# x1,x2,x3,xx4
symmetry operator 'x1,x2,x3,xx4' could not be parsed

# x1,+-x2,x3,x4+1/2
symmetry operator 'x1,+-x2,x3,x4+1/2' could not be parsed

# x1+1/2,x2+1./2,x3,x4
symmetry operator 'x1+1/2,x2+1./2,x3,x4' could not be parsed

# x1+1/2,-x2+1///2,x3,x4+1/2
symmetry operator 'x1+1/2,-x2+1///2,x3,x4+1/2' could not be parsed
