The lack of the letter ""F"" in the pre-1987 Tagalog alphabet (Abakada) caused the letter ""P"" to be substituted for ""F"", though the alphabets and/or writing scripts of some non-Tagalog ethnic groups included the letter "F". Upon official adoption of the modern, 28-letter Filipino alphabet in 1987, the term "Filipino" was preferred over "Pilipino". Locally, some still use "Pilipino" to refer to the people and "Filipino" to refer to the language, but in international use "Filipino" is the usual form for both.