All letters and digraphs represent unique phonemes. There are three consonant digraphs&colon; DH, KH and SH. Ligatures may also not separate digraphs or diphthongs in print. In addition, there are also some runes which stand for particular English digraphs and diphthongs. The digraphs of Aspirated consonant are as follow. French digraphs and trigraphs have both historical and phonological origins. There are several conventions of Okinawan kana that involve subscript digraphs or ligatures. The consonant digraphs "hl", "hr", "hn" occurred word-initially. There are also eleven digraphs and two trigraphs. This includes Beninese Yoruba, which in Nigeria is written with both diacritics and digraphs. Different systems define different sets of digraphs and trigraphs, as described below. However, alphabets may also be designed with discontinuous digraphs. The same applies to digraphs and trigraphs. This is a list of digraphs used in various Latin alphabets. The digraphs and are normally used to represent single affricates and .