The letter on its own represents in Polish. It is also used in four of the seven officially recognized digraphs: (), ( or ), ( or , sometimes it represents a sequence ) and (), and is the most frequently used of the consonants in that language. (Other Slavic languages avoid digraphs and mark the corresponding phonemes with the (caron) diacritic: , , , ; this system has its origin in Czech orthography of the Hussite period.) can also appear with diacritical marks, namely and , which are used to represent the sounds and . They also appear in the digraphs ( or ) and ( or ).