lima.
Such examples are, I believe, entirely unique among primitive number systems.
In numeral scales where the formative process has been of the general nature just exhibited, irregularities of various kinds are of frequent occurrence.

Hand numerals may appear, and then suddenly disappear, just where we should look for them with the greatest degree of certainty.

In the Ende,[101] a dialect of the Flores Islands, 5, 6, and 7 are of hand formation, while 8 and 9 are of entirely different origin, as the scale shows.
1.

sa.
2.

zua.
3.