QU017/KH0605 - Ascher Sum Fieldmarks

Fragmentary khipu with three main cords and subsidiary cords. Three main cords tied together. End of Main C is severed.

There are 3 S-plied main cords knotted together (by single overhand knots?). Main A- mon lt tn. Main B - mot md br/lt tn. Main C - mon lt br.
Main A and B are read right to left and Main C is read left to right.
Measurements (going from without the knotted sections, so excluding the part of the main cord that is held up in a knot)
Main A 35.3; Main B - 28 with 2.5 at kntted end coming out of knot with MA; Main C - 32.5 with 1.2 coming out of plied end knotted with MB.
Main A knotted end is at far left, MA plied end is tied to MB knotted end and some pendants come out of this knot. Main B plied end is knotted with Main C plied end and object's far right side is severed end of Main C.
How would it have been held up and read?
There doesn’t seem to be a real register system in use.
Does not seem like this khipu can be read numerically; does not follow register system
There are tricolor and 4 color mottled cords -- unusual
2 pendants on Main B are tied up inside knot with Main A -- indicates that these were three khipu created separately and then tied together because somehow related
Main A and Main B are whole khipu; Main C is a fragment of a khipu
Last cord has long knots in 2 different directions
White thread wrapped around p1-p7, p8-p17, and p18-p28, which are all rust brown cords. Are these white threads the remainders of detached subsidiaries?