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The Irish manual alphabet is the manual alphabet used in Irish Sign Language. Compared with other manual alphabets based on the Latin alphabet, it has unusual forms for the letters G, K, L, P, and Q.
^a Sign-language names reflect the region of origin. Natural sign languages are not related to the spoken language used in the same region. For example, French Sign Language originated in France, but is not related to French. Conversely, ASL and BSL both originated in English-speaking countries but are not related to each other; ASL however is related to French Sign Language.
^b Denotes the number (if known) of languages within the family. No further information is given on these languages.
^c Italicised languages demark which languages have gone to sleep or have become extinct.
