English alphabet 24 letters of the Latin alphabet first (including ampersand), then 5 additional English letters, starting with the Tironian note "ond" (⁊), an insular symbol for "and": In the orthography of Modern English, thorn (þ), eth (ð), wynn (ƿ), yogh (), ash (æ), and ethel (œ) are obsolete. Latin borrowings reintroduced homographs of ash and ethel into Middle English and Early Modern English, though they are largely obsolete (see "Ligatures in recent usage" below), and where they are used they are not considered to be separate letters (e.g. for collation purposes), but rather ligatures. Thorn and eth were both replaced by
Cardinal vowels the opposite side of the front-back dimension, so that e.g. Cardinal 1 can be produced with rounding somewhat similar to that of Cardinal 8 (though normally compressed rather than protruded); these are known as 'secondary cardinal vowels'. Sounds such as these are claimed to be less common in the world's languages. Other vowel sounds are also recognised on the vowel chart of the International Phonetic Alphabet. In the , the cardinal vowels have the same numbers used above, but added to 300. The usual explanation of the cardinal vowel system implies that the competent user can reliably distinguish between sixteen