You're absolutely right Ronny
but there 'atum' is only a suffix, the full lemmas is
abdĭco, abdĭc
as, abdĭc
avi, abdĭc
atum, abdĭc
āre
once you type
abd it brings you there
the same when you recall within a book; in case of wrong lemma shown, you could change the word list by typing better and get the correct lemma
isn't very quick, but to have the right behaviour one should make the special files (collates & morphems) requested by the converter to handle suffix
the problem is with very short words...
best regards
paolo