In this research a method of quantification and presentation is used, the notes are quantified and are presented in a graphics. In figure 5 Contrapunctus 14 is presented in this way. Per note every pitch is chromatic numbered and presented as function of time. In the graphics every voice is a separate function presented with a different colour.
In the graphics the pitch is presented at the vertical axis, the time in bars at the horizontal axis.
In figure 11 Contrapunctus 14 is represented in this way. The vertical lines marks the crossed out bars and page 5. The end is the addition from the Urtext version, G. Henle Verlag, Paris 1989.