lanamrihegem = fingers of both hands.
20.

lanamrihegem cat gracherhaka anamichirihegem = fingers of both hands together with toes of both feet.
That the number sense of the Abipones is but little, if at all, above that of the native Australian tribes, is shown by their expressing 3 by the combination 2 and 1.

This limitation, as we have already seen, is shared by the Botocudos, the Chiquitos, and many of the other native races of South America.

But the Abipones, in seeking for words with which to enable themselves to pass beyond the limit 3, invented the singular terms just given for 4 and 5.

The ostrich, having three toes in front and one behind on each foot presented them with a living example of 3 + 1; hence "toes of an ostrich" became their numeral for 4.