It seems there is at least some grammar: Among the most significant ones, Yves Duhoux demonstrated that the language behind Linear A makes heavy use of prefixe

It seems there is at least some grammar: Among the most significant ones, Yves Duhoux demonstrated that the language behind Linear A makes heavy use of prefixes and suffixes for word-formation (that is, the individual syllables added at word-start or word-end to convey additional information, such as gender and number.)