(Section 11-605(4), Administrative Code.) In the case of combined reports, subsidiary capital is the total of the amounts of subsidiary capital of each corporation included in the combined report allocated within New York City. There is eliminated in computing the amount of combined subsidiary capital all investments of any corporation included in the combined report in the stock of, and any indebtedness from, any subsidiary corporation included in such report. See 19 RCNY § 11-42, infra. As to when combined reports will be permitted or required, see 19 RCNY § 11-91, infra.