Also known as Badlit script - is an Ancient pre-Filipino writing system, it's member of the Brahmic family and closely related to other writing system in Southeast Asia, Suwat Bisaya is an Abugida or an alpha-syllabary writing system, like most writing system used in Southeast Asia, where any consonants is pronouced with a vowel and using a diacritical marks to express other vowels.
Also known as Baybayin (pre-kudlit: ᜊᜊᜌᜒ, post-kudlit: ᜊᜌ᜔ᜊᜌᜒᜈ᜔) is a pre-Spanish Philippine writing system. It is a member of the Brahmic family and is recorded as being in use in the 16th century. It continued to be used during the Spanish colonization of the Philippines up until the late 19th Century.
also known as Culit, Kulitan and Pamagkulit is an indigenous writing system of the Kapampangan people, Sulat Kapampangan is an abugida or alphasyllabary, where the consonantal characters possess a inherent vowel sound that can be change with use of diacritical marks, Sulat Kapampangan can be written left to right and below to down note that Sulat Kapampangan has rules on each direction, above image is a chart for vertical writing.