He could have deciphered some ancient codes and given them the names of people who'd already gone back to London.

They still abide in many ways by an ancient code of patriarchal ethics.

I think your friend lives by a very simple and ancient code.

Speaking his name in public seemed a violation of my privacy, or of some ancient code.

I am not constrained by her ancient codes of honor.

We have their ancient codes from the ship of Kirk.

This is from an ancient code used by stranded airmen on Earth.

Some of our scholars here suspect it to be an ancient code used by wizards.

In that event, according to certain ancient codes, she was expected to leave.

Even today this ancient code is still being kept by modern archaeologists.