In the earliest days, some provinces used three-letter codes, but these were abolished after 1926.

The latter two are identified by three-letter codes, and the site provides a list of codes.

It opens with three-letter code like a combination lock.

The three-letter code was written in bold capitals if the caller should dial all seven digits.

The three-letter codes given for each language in this part of the standard are referred to as "Alpha-3" codes.

After completing an episode, the player is given a three-letter code in addition to a total score and time.

The standard describes three-letter codes for identifying languages.

Mandrake has figured out the three-letter code, but he can't make the utterly serious and skeptical Wynn believe him.

By the early 1920's, three-letter codes had begun to run out, so the Government switched to four-letter signs.

There is also a six-page list of the three-letter codes for about 200 domestic airports.