Split division tab labels don't match

First unusual event: tab labels across divisions do not
always match due to lexical precedence. The tabs that
match are correct. Tabs within divisions are all correct.

How to reproduce:
1. Shape / Create / Icosahedron
2. Shape / Geodesic / 3-frequency
3. Shape / Stellate / 75% (or whatever)
4. Split into 4 divisions. The divisions I used have 5
faces each, and are the top third (cap), bottom third
(cap), and the equatorial band split into two groups as
follows:
division A: faces A, B, C, E and F
division B: faces Q, P, N, R and M
division C: faces S, O, G, H and I
division D: faces D, T, J, K and L

Examples of flaw: Kg9s3:c matches the same name, but
Kg7s3:c is supposed to match Fg7s3:c
Fg9s3:c is supposed to match Kg5s3:c
etc.