Sentence examples for rules should be from inspiring English sources

What rules should be followed?

Derivation rules should be biconditionals.

The rules should be concrete.

What rules should be in place?

The rules "should be settled," the diplomat said.

"Rules should be as simple as possible," he said.

These new rules should be flexible and cost-effective.

These rules should be applied to all mortgage lenders.

"I think genre rules should be porous, if not nonexistent.

Melnitsky contributed, saying she felt the rules should be changed.

Fair ground rules should be set in advance.