texmath-0.9.4: tests/writers/moAmovable15.eqn
sum from x to 0 = sum from x to 0 = sum from x to 0 = {sum from x to 0 = sum from x to 0 = sum from x to 0}
sum from x to 0 = sum from x to 0 = sum from x to 0 = {sum from x to 0 = sum from x to 0 = sum from x to 0}