LEhU (http://www.lojban.org/en/publications/reference_grammar/chapter19.html)

Indicates the end of a quotation begun with LOhU. Not an elidable terminator.

lo'u mi du do du mi le'u cu na lojbo drani [quote] mi du do du mi [unquote]
is-not Lojbanically correct. ``mi du do du mi'' is not correct Lojban.

