(Program
  (Match
    (Identifier)
    (
      (Pattern
        (
          (Identifier))
        (
        {+(Identifier)+}
        {+(Pattern
          {+(
            {+(Identifier)+}
            {+(Identifier)+})+}
          {+(
            {+(Identifier)+})+})+}))))
{-(Match
  {-(Empty)-}
  {-(
    {-(Pattern
      {-(
        {-(Boolean)-})-}
      {-(
        {-(TextElement)-})-})-})-})-})