The related activities described in section 3(r) as included in the statutory enterprise are those performed for a “common business purpose.” (See the comprehensive discussion in 29 CFR part 776.) The term “common business purpose” as used in the definition does not have a narrow concept and is not intended to be limited to a single business establishment or a single type of business. As pointed out above, retailing, wholesaling and manufacturing may, under certain circumstances be engaged in for a “common business purpose.” (See § 779.209.) An example was also cited where retailing and construction were performed for a common business purpose. (See § 779.206.) On the other hand, it is clear that even a single individual or corporation may perform activities for different business purposes. (See § 779.211.) Thus the reports of the House of Representatives cite, as an example of this, the case of a single company which owns several retail apparel stores and is also engaged in the lumbering business. It concludes that these activities are not part of a single enterprise. (H. Rept. 75, 87th Cong.,1st Sess., p. 7 and H. Rept. 1366, 89th Cong. 2d Sess., p. 9.)