The Subsecondary is taken from fingers 2, 3, 4 (numerator), and 7, 8, 9 (denominator).
The Subsecondary is brought up to the classification line to the right of the secondary.
Definite values are assigned to the ridge counts in these fingers.
Whorl tracings are brought up as part of the Subsecondary.
A small letter to the right of the index finger eliminates the Subsecondary, with some exceptions.