KUhE (http://www.lojban.org/en/publications/reference_grammar/chapter18.html)

Elidable terminator for PEhO: indicates the end of a forethought mathematical
expression (one in which the operator precedes the operands).

li pe'o su'i reboi reboi re[boi] ku'e du li xa The number [forethought]
the-sum-of two two two [end] equals the-number six.

