This alphabet was instituted in 1987 during the Aquino presidency. The current Filipino alphabet includes 8 letters from the Spanish alphabet: c, f, j, ñ, q, v, x, z. Abakada remained the national language's alphabet from 1940 to 1976. The result was 20 letters (5 vowels and 15 consonants).
Santos developed The Grammar of the National Language (Ang Balarila ng Wikang Pambansa), which contained the alphabet for the national language abakada, named after its first three letters, representing the sounds in the Tagalog language. Spanish missionaries introduced the Latin alphabet and the Spanish language.
Before today, the number of letters in the Filipino alphabet varied, having four sets of letters since the pre-colonial times.