ProgramNode(0...11)(
  [:a],
  StatementsNode(0...11)(
    [MultiWriteNode(0...11)(
       [LocalVariableWriteNode(0...1)(:a, 0, nil, (0...1), nil),
        CallNode(3...7)(
          CallNode(3...4)(nil, nil, (3...4), nil, nil, nil, nil, 0, "b"),
          (4...6),
          (6...7),
          nil,
          nil,
          nil,
          nil,
          0,
          "c="
        )],
       (8...9),
       CallNode(10...11)(nil, nil, (10...11), nil, nil, nil, nil, 0, "d"),
       nil,
       nil
     )]
  )
)
