On grammatical class:

se'e'i
placed before a selbri, merges x1 and x2 places.
te'e'a
2-Merge Conversion: placed immediately before a selbri, merges x2 and x3 places.
te'e'i
placed before a selbri, merges x1 and x3 places (with the new x1 being equivalent to the result of this merging).
ve'e'a
2-Merge Conversion: placed immediately before a selbri, merges x2 and x4 places.
ve'e'i
placed before a selbri, merges x1 and x4 places.
ve'e'u
2-Merge Conversion: placed immediately before a selbri, merges x3 and x4 places.
xe'e'a
2-Merge Conversion: placed immediately before a selbri, merges x2 and xn places.
xe'e'i
placed before a selbri, merges x1 and x5 places.
xe'e'o
2-Merge Conversion: placed immediately before a selbri, merges x4 and x5 places.
xe'e'u
2-Merge Conversion: placed immediately before a selbri, merges x3 and x5 places.
ze'e'a
n-Merge Conversion: placed immediately before a selbri, merges x2 and all xa places.
ze'e'au
n-Merge Conversion: placed immediately before a selbri, merges all xa places.
ze'e'e
n-Merge Conversion: placed immediately before a selbri, merges x5 and all xa places.
ze'e'i
n-Merge Conversion: placed immediately before a selbri, merges x1 and all xa places.
ze'e'o
n-Merge Conversion: placed immediately before a selbri, merges x4 and all xa places.
ze'e'u
n-Merge Conversion: placed immediately before a selbri, merges x3 and all xa places.