(Program
  (Module
    (Identifier))
  (Function
    (Identifier)
    (Args)
  {+(Slice
      (Identifier)
      (NumberLiteral))+}
  {+(Slice
      (Identifier)
      (NumberLiteral))+}
  {+(Slice
      (Identifier)
      (NumberLiteral))+}
  {-(IndexExpression
      (Identifier)
      (NumberLiteral))-}
  {-(Slice
      (Identifier))-}
  {-(Slice
      (Identifier)
      (NumberLiteral))-}
    (Slice
      (Identifier)
      (NumberLiteral)
      (NumberLiteral))
    (Slice
      (Identifier)
      (NumberLiteral)
      (NumberLiteral))
    (Slice
      (Identifier)
      (NumberLiteral)
      (NumberLiteral)
      (NumberLiteral))))