The children laughed as they swung.

Agreed, if there are as many esses in an individual as there are forms in that individual, then a plurality of substantial forms in an individual implies a plurality of substantial esses in that individual, just as a plurality of accidental forms in an individual implies a plurality of accidental esses in that individual.

“They have not enough heart,” said Edith, with a smile. The very twilight of a smile: so singularly were its light and darkness blended.

They are responsible for the truck fleet and especially aware of the economic strain if trucks are miss-used by tripsters.