On grammatical class:
- ci'i
- digit/number: infinity; followed by digits => aleph cardinality.
- ka'o
- digit/number: imaginary i; square root of -1.
- no'o
- digit/number: typical/average value.
- pai
- digit/number: pi (approximately 3.1416...).
- te'o
- digit/number: exponential e (approx 2.71828...).
- tu'o
- null operand (used in unary mekso operations).
- xo
- digit/number: number/digit/lerfu question.