ze'au'e SE experimental cmavo

last-th conversion: switches the last terbri with the first one.

For exactly-n-terbri, this it the nth conversion. For a one-terbri word, this is equivalent to re'au'e. For two-terbri selbri, this is se. For three-terbri selbri, this is te. For four-terbri selbri, this is ve. For five-terbri selbri, this is xe. In general, this might be equivalent to sexiro, although this might be debatable.