Within a beat, a single sixteenth note (semiquaver) can be in first, second, third or fourth place (see exercises 1 - 4 above). These strummed sixteenths appear in the notation with a note head, while the muted sixteenths are marked with a cross.
The following exercises 5 - 14 were formed from all possible combinations of the rhythms 1 - 4. For example, exercise 5 corresponds to the combination of rhythm 1 + 2. These rhythms can be heard with a mouse click on the notation as a drum beat with clapping.
In the video the rhythm guitar plays the whole piece using the chord changes | A7 | C#m7 | . To count the rhythms, the measures are numbered with | 1 e + a | 2 e + a | 3 e + a | 4 e + a | .
The 16th note rhythm exercises are included in the Guitar Lovers Studies PDF which features high graphic resolution for printing and integrated sound.