In a recent posting I gave the example
... le jimkatbra be ne be'i la djan.
the device *glue* *supplementary* sent-by john
I was so concentrated on the glue function that I forgot, that "be"
here is unnecessary since "ne" automatically sticks to sumti. And
since the ne... phrase ends up in grammar rule "relative-clause<111>",
it looks like "be" is actually ungrammatical.
-- jimc