For some of them, additional letters were introduced.

In 1937, letters in numberplates were first introduced, using an aa-nnn format.

The letter was introduced by missionaries and has been in use for over a hundred years.

The letter was introduced as evidence at the Doctor's Trial at Nuremberg.

Five additional letters were later introduced (mainly in the manuscript tradition), the so-called forfeda.

The letter was introduced during the cyrillization of the North-Caucasian languages in the late 1930s.

In fact, reading is not taught until second or third grade, though the letters are introduced in first and second grades.

The letters were introduced to the Unicode standard before 1992, and their names cannot be altered.

Alphabetical letters were introduced when Terminal 2 was completed.

As this service continued to use older equipment for years after the letters were introduced, this was not usually a problem.