(Statements
  (Subscript
    (Send
    { (Identifier)
    ->(Identifier) })
  {+(Send
    {+(Identifier)+})+}
  {-(TextElement)-})
  (Subscript
    (Send
    { (Identifier)
    ->(Identifier) })
  { (SymbolElement)
  ->(SymbolElement) })
{+(Assignment
  {+(Subscript
    {+(Send
      {+(Identifier)+})+}
    {+(Send
      {+(Identifier)+})+})+}
  {+(Integer)+})+})