e/Three letter rule

Information
has gloss	eng: In English spelling, the three letter rule (or short word rule) is the observation that one- and two-letter words tend to be function words such as I, at, he, if, of, or, etc. As a consequence of the rule, "content words" tend to have at least three letters. In particular, content words containing fewer than three phonemes may be augmented with letters which are phonetically redundant, such as ebb, add, egg, inn, bee, see, awe, buy, owe, etc.
lexicalization	eng: Three letter rule
lexicalization	eng: Three-letter rule
instance of	c/English spelling