388. The outlines of nouns in the plural number, ending regularly in s or es, as well as of nouns in the possessive case, are formed from the outlines of the singular number in the following manner:
I. Except when the outline of the singular number ends with breve-s,— always by the addition of breve-s.
II. When the outline of the singular number ends with breve-s,— by changing the breve-s to breve-sez. If the final breve-s of the singular number is turned within an n-hook or curl, (as in fence or license), the stem En must be substituted for the hook or curl before joining the breve-sez.
389. Certain Verb Forms. - The outlines of verbs in the third person singular of the indicative present are formed from the outlines of their roots exactly in accordance with the foregoing rules for plurals and possessives ; thus, love, he loves,— hiss, it hisses,— lance, he lances,— license, he licenses, etc.
390. Days, sheep's, pins, matters, grounds, painters or painter's or painters', men's, funds, infant's, roofs, passions, nations or nation's, ancients, writers or writer's, scepters, physicians, incisions, case, cases, miss, misses, sources, Jones's, appearances, fence, fences, lens, lenses, processes, posts, rosters, spinsters, poisons, lessons, Wesson's, Watson's, absence, absences.