> as lemmas

1838 W. P. Powell Simplified Lat. Gram. Pref. p. xv It will probably be found advisable for the leading rules to be learned first,..before the learner proceed to the sub-rules.

1908 E. Holmes Creed of Buddha iv. 105 In the attempt to define correctness with perfect accuracy, rules and sub-rules spring up in rank profusion.

2008 M. Kingwell Concrete Reveries ii. 32 The basic rule of walking in New York is:..don't break stride. (The sub-rules..include keep right, no sudden stopping, get off the phone, [etc.]).