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