How can simpler social institutions develop into more complex institutions according to John Searle?

According to the American philosopher John Searle, social institutions are constructed through collective intentions, or "we-intentions," which follow the constitutive rule: "X counts as Y in context C."1

These institutions develop into more complex structures through the process of iteration. Because the "Y" status assigned to an object or action in one context can serve as the "X" (the base element) for a higher-level intention, social reality can be built in layers.1

For example, a simple utterance (X) may count as an English sentence (Y). That sentence (X) can then count as a promise (Y), and the act of making a promise (X) can subsequently count as a marriage (Y) within a specific ceremony (C). Through this recursive application of the "counts as" formula, individuals create increasingly sophisticated social frameworks, such as money, property, and governments, out of simpler, foundational social interactions.1