As you are probably aware, MATAU , NOKAMA , NUJU , and VAKAMA were all available in Japan in 2001 packaged with Kabaya candy (see the pictures below). What you may not know is that they included instructions for a four-way combiner Kaita. This was necessary because the six-way combiner TURAGA NUI can not be built with just these four sets.

This particular Kaita tends to fall over into a crumpled heap if you look at it the wrong way, so be careful when handling it.

Thanks go to Makuta Nuva for sending me the instructions all the way from Japan!