The sä proposal adds the following "forethought" conjunction patterns, replacing the official râ, rô, rî, rû:
- sä X râ Y = either X or Y (or both).
- sä X rô Y = either X or Y (but not both). (or maybe tö X rô Y)
- tü X rû Y = both X and Y.
- hï X rî Y = which of X and Y?
- sïa X bûrubu Y = neither X nor Y.