A "hyphen" in lojban has a very specific meaning. It's a leter that glues two things together into one single word, such as "y" between disallowed consonant pairs, or "r" joining two CVV rafsi, or "r","n" or "l" gluing the front part of a fui'vla to the back part. A period is nothing more or less than a required pause in speaking. la.djak.kenedis is exactly the same as la djak. kenedis. (or, in simplified writing, "la djak kenedis") A "la" can be followed by any number of cmevla, turning them all into a single name That's why la ja.jak.rusol is not allowed, because "ja" isn't a cmevla