gulalegyitk.
700.

gulalegyitk te kcenecal = 600 + 100.
800.

tqalpqtalegyitk.
900.

tqalpqtalegyitk te kcenecal = 800 + 100.
1000.

k'pal.
To the unobservant eye this scale would certainly appear to contain no more than a trace of the vigesimal in its structure.