In practice, of course, we tend to limit ourselves to the familiar letters and digits.
In the 18th century three unpublished familiar letters from Vespucci to Lorenzo de' Medici were rediscovered.
On the latter head, I extract from her familiar letters written home to England at the time, two pleasant pieces of description.
At least the Earth natives used a simplified form of the usual coine, she thought, watching the familiar letters dissolve and reform.
Alien symbols were replaced by familiar letters and words as Gomez input a translator algorithm.
Diary of John Evelyn, to which are added a selection from his familiar letters, ed.
Eleven familiar letters marched across the screen from right to left and halted.
Vanov had pointed to a series of familiar letters on the door.
The intensity of her fixation with John F. Kennedy is evident in the long, familiar letters that she sends him on a regular basis.
In addition, they have a few other letters, and some letters familiar to English are omitted.