This too is a serious error, because dh is not a letter sequence in English.

Ough is a letter sequence often seen in words in the English language.

Since 1998, a partially comprehensive letter sequence has been seen for the Federal District, thus, identifying the car's model year:

It is not just at the ends of words where common letter sequences can make use of the same nodes in a tree structure.

A tree can be constructed where this process is taken to its optimal conclusion, so that all possible common letter sequences are shared.

For Karlstrom, the letter sequence was embarrassingly sentimental but the overall message of the film rang true.

For the letter sequence sometimes seen as a printer's error, see etaoin shrdlu.

The letter sequences are in order of frequency with the most common first.

For example, the three letter sequence "ffi", may be treated as a single glyph.

The letter sequence, and indeed the letter inventory is not fixed.