This site only deals with tremolo, a challenging technique on guitar. Most guitar players know the classical tremolo, but there is much more.
3 The classical tremolo is been played by the thumb (p) followed by the ring finger (a), the middle finger (m) and the index (i), 3 notes.
4 To obtain a clearer sound flamenco players use the flamenco tremolo or quatremolo, the thumb followed by 4 notes. Many of them really are masters of tremolo. With this tremolo eventually you gain more control of the sound.
5 You even can let the thumb be followed by 5 notes, quintremolo.
With a combination of tremolos it is possible to produce a (Latin) rhythms.