However the ABAKADA is only the alphabet of the Tagalogs as other ethnic nations also have their own alphabets and/or writing scripts and these other ethnic nations did have the letter "F" in their alphabets.Use of the term "Filipino" in the Philippines started during the Spanish colonial period.
Many of the barangay (tribal municipalities) were, to a varying extent, under the de jure jurisprudence of one of several neighboring empires, among them the Malay Srivijaya, Javanese Majapahit, Brunei, Malacca, Indian Chola, Champa and Khmer empires, although de facto had established their own independent system of rule.
This may have enabled ancient migrations into the Philippines from Maritime Southeast Asia approximately 50,000 BC to 13,000 BC. This was a two-pronged expansion, which moved north through the Philippines and into Taiwan, while a second expansion prong spread east along the New Guinea coast and into Oceania and Polynesia.
After the mass migrations through land bridges, migrations continued by boat during the maritime era of South East Asia.
Mongoloid is the term which anthropologists applied to the ethnic group which migrated to Southeast Asia during the Holocene period and evolved into the Austronesian people (associated with the Haplogroup O1 (Y-DNA) genetic marker), a group of Malayo-Polynesian-speaking people including those from Indonesia, the Philippines, Malaysia, Malagasy, the non-Chinese Taiwan Aboriginals.
Fluctuations in ancient shorelines between 150,000 BC and 17,000 BC connected the Malay Archipelago region with Maritime Southeast Asia and the Philippines. Gray at the University of California, Los Angeles published in the journal Science, suggests that the population expansion of Austronesian peoples was triggered by rising sea levels of the Sunda shelf at the end of the last ice age.