C3

I've spent some time working on C3. It has some Lin features, but with differences:
(a) "cements", which mark the "generation" of both the preceding root or head root and the following root.
(b) root class is determined by syntax: component order and a choice of "internal" or "external" cements.
(c) 2 root classes instead of 3
(d) 2 generations instead of 3, so there are only 8 cements instead of 18 (tetrasemy instead of enneasemy)
(e) content roots are single symbols: a-z, A-Z and 0-9, so there are 62 symbols instead of 26; this is what allows me to reduce the generations and classes.

Other features (such as tense) are more like C2.

C4

Here are my notes for C4. The syntax is SVO Accusative and Head-Modifier.

There are 4 generations of nouns, 3 of univalent verbs, and 1 of bivalent verbs. Univalent verbs are assigned to generations 0, 1, and 2 while bivalent verbs are assigned to generation 3.

The root symbols are a-z, A-Z, and 0-9; this makes a total of 496 roots. The digits, noun generation 0, are used for the pronouns, which are the same as for C2.

Some roots are derivational and must be followed by another root. Each derivational root occupies 4 generations of the same root, so that the base root to which the derivational root is prefixed can be any generation.

The cements have been replaced by switches, which select one of 2 functions for the following root, as well as the generation for that root. The functions are noun modifier or additional noun modifier and main verb or additional main level verb. Only the 1st 4 switches are used with nouns; with verbs, the 1st 4 indicate modifier level, while the 2nd 4 indicate main level. Switch 0 is null. The switch symbols are

    1 :    2 @    3 +    4 $    5 %    6 =    7 &

A noun modifier has an object noun, iff bivalent, but the object noun can't be modified.

Embedded clauses begin with { and end with }.

A relative clause may be used in place of a noun-modifier. A relative clause is constructed as an embedded clause containing a host argument pronoun referring to the head of the clause (6 if the head is the subject, otherwise 7).

A complement clause may be used in place of a noun and its modifiers. It's constructed as an embedded clause. It _may_ contain a host argument pronoun to refer to the other argument of the verb.

Since nouns can't be used as predicates, there's a copula which acts like a bivalent verb syntactically.