I think codebook by itself is more than enough to produce grammatically valid language, either by assigning different codes to different forms, or assigning separate codes to roots and suffixes/prefixes.
As far as I understand, slot grammars (if that's what you are referring to) and core-mantle-crust are two descriptions of the same phenomenon of certain structure in the sequences of characters, so I'm not sure combining them makes any difference. But maybe I'm missing something.
As far as I understand, slot grammars (if that's what you are referring to) and core-mantle-crust are two descriptions of the same phenomenon of certain structure in the sequences of characters, so I'm not sure combining them makes any difference. But maybe I'm missing something.