(Statements
  (Package
    (Identifier))
  (Function
    (Empty)
    (Identifier)
    (Statements)
  { (Match
    {-(Empty)-}
    {-(Statements)-})
  ->(Statements
    {+(Match
      {+(Statements)+}
      {+(Pattern
        {+(Identifier)+}
        {+(Call
          {+(Identifier)+}
          {+(Statements)+}
          {+(Empty)+})+})+})+}
    {+(Match
      {+(Statements
        {+(Identifier)+})+}
      {+(Statements
        {+(Pattern
          {+(Statements
            {+(Integer)+}
            {+(Integer)+})+}
          {+(Statements
            {+(Call
              {+(Identifier)+}
              {+(Statements)+}
              {+(Empty)+})+}
            {+(Call
              {+(Identifier)+}
              {+(Statements)+}
              {+(Empty)+})+}
            {+(Pattern
              {+(Identifier)+}
              {+(Empty)+})+})+})+}
        {+(DefaultPattern
          {+(Statements
            {+(Call
              {+(Identifier)+}
              {+(Statements)+}
              {+(Empty)+})+}
            {+(Break
              {+(Empty)+})+})+})+})+})+}) }))