It is the method which was briefly discussed in the early part of the present chapter, and is by no means uncommon.

In a decimal scale this repetition would begin with 11 instead of 6; as in the system found in use in Tagala and Pampanaga, two of the Philippine Islands, where, for example, 11, 12, and 13 are:[97] 11.

labi-n-isa = over 1.
12.

labi-n-dalaua = over 2.
13.

labi-n-tatlo = over 3.
A precisely similar method of numeral building is used by some of our Western Indian tribes.