{"_comment":"add row for zero 0","_date":0,"ordinals":{"<0>":{"name":"zero"}}}
{"_comment":"delete row for 0","_date":0,"ordinals":{"<0>":null}}
{"_comment":"add back row for zero 0","_date":0,"ordinals":{"<1>":{"name":"zero"}}}
{"_comment":"add row for zero 0","_date":0,"ordinals":{"<0>":{"name":"zero"}}}
{"_comment":"delete row for 0","_date":0,"ordinals":{"<0>":null}}
{"_comment":"add back row for zero 0","_date":0,"ordinals":{"<1>":{"name":"zero"}}}