(Program
{ (MethodCall
    (Identifier))
->(MethodCall
    (Identifier)
    (Identifier)) }
{+(MethodCall
    (Identifier)
    (Identifier)
    (Identifier)
    (Pair
      (SymbolLiteral)
      (IntegerLiteral))
    (Pair
      (Identifier)
      (IntegerLiteral)))+}
{+(MethodCall
    (Identifier)
    (MethodCall
      (Identifier)
      (Identifier)))+}
{+(MethodCall
    (Identifier)
    (Pair
      (ArrayLiteral)
      (IntegerLiteral))
    (Other "splat_argument"
      (Identifier))
    (Other "block_argument"
      (Identifier))
    (AnonymousFunction
      (Identifier)
      (IntegerLiteral)))+})