(Program
{+(Throw
  {+(
    {+(Call
      {+(Identifier)+}
      {+(TextElement)+}
      {+(Empty)+})+})+})+}
{+(Throw
  {+(
    {+(Call
      {+(Identifier)+}
      {+(TextElement)+}
      {+(Empty)+})+}
    {+(Identifier)+})+})+}
  (Throw
    ([]))
{-(Throw
  {-(
    {-(Call
      {-(Identifier)-}
      {-(TextElement)-}
      {-(Empty)-})-})-})-}
{-(Throw
  {-(
    {-(Call
      {-(Identifier)-}
      {-(TextElement)-}
      {-(Empty)-})-}
    {-(Identifier)-})-})-})