Table:
Year ended December 31,

2019	2018	2017

Beginning balance	$(1.3)	$(1.9)	$(2.2)

Bad debt expense	(1.6)	(0.6)	(0.8)

Write-offs, net of recoveries	1.6	1.2	1.1

Ending balance	$(1.3)	$(1.3)	$(1.9)

the 2nd row
Extract the contents of cells in the above row. The cells in a row should be presented in the JSON format of {"row_id":"<row index>", "cell_list":"<a list of cells in this row>"}, e.g., {"row_id":"3", "cell_list": ["xxx", "yyy", "zzz"]}.

The cells in the 2nd row: {"row_id": "2", "cell_list": ['', '2019', '2018', '2017']}