*(Not really sure this should be in the Conlangs subforum or the Linguistics-&-Natlangs section?)*

Suppose we have a 3Cons (a Tri-Consonantal-Root language) that is descended from a 2Cons protolang (a Bi-Consonantal-Root proto-language).

Here are three things that

*might*happen.

1) Maybe: For any six consonants C1, C2, C3, C4, C5, and C6;

If any three of C1-C2-C5, C1-C2-C6, C3-C4-C5, or C3-C4-C6, are attested roots in the 'lang;

then (a) "with (overwhelmingly?) greater-than-chance frequency", the fourth one is also a root in the 'lang,

AND: (1b) "with (overwhelmingly?) greater-than-chance frequency", the semantic relationship between C1-C2-C5 and C1-C2-C6, is the same (or almost the same?) as the semantic relationship between C3-C4-C5 and C3-C4-C6.

2) Maybe: For any six consonants C1, C2, C3, C4, C5, and C6;

If any three of C1-C3-C4, C1-C5-C6, C2-C3-C4, or C2-C5-C6, are attested roots in the 'lang;

then (a) "with (overwhelmingly?) greater-than-chance frequency", the fourth one is also a root in the 'lang,

AND: (2b) "with (overwhelmingly?) greater-than-chance frequency", the semantic relationship between C1-C3-C4 and C2-C3-C4, is the same (or almost the same?) as the semantic relationship between C1-C5-C6 and C2-C5-C6.

3) Maybe: For any six consonants C1, C2, C3, C4, C5, and C6;

If any three of C1-C2-C3, C1-C4-C5, C2-C3-C6, or C4-C5-C6, are attested roots in the 'lang;

then (a) "with (overwhelmingly?) greater-than-chance frequency", the fourth one is also a root in the 'lang,

AND: (3b) "with (overwhelmingly?) greater-than-chance frequency", the semantic relationship between C1-C2-C3 and C2-C3-C6, is the same (or almost the same?) as the semantic relationship between C1-C4-C5 and C4-C5-C6.

Questions:

I. For each of those three statements, is there a RL 3Cons Natlang for which that statement is true? (And if so, what is one such natlang?)

*(this is really three questions.)*

II. For each pair of those three statements, is there a RL 3Cons Natlang for which both of those statements are true? (And if so, what is one such natlang?)

*(this also is really three questions.)*

*(Any positive answer to II would imply two positive answers to I. Any two positive answers to II would imply three positive answers to I.)*

III. Is there a RL 3Cons Natlang for which all three of those statements are true? (And if so, what is one such natlang?)

*(A positive answer to III would imply three positive answers to II.)*

*Questions I, II, and III above, are short-answer questions. They may require an awful lot of research, but no theorizing.*

Questions IV and V below are more essay-questions.

Questions IV and V below are more essay-questions.

IV. If there is one of those statements which is not true of any RL 3Cons natlang, (A) Is there a reason why not? AND (B) Is that reason such that no conlang satisfying that statement would be naturalistic nand/nor realistic?

V. If there are two of those statements which are never both simultaneoussly true of any RL 3Cons natlang, (A) Is there a reason why not? AND (B) Is that reason such that no conlang simultaneously satisfying both of those statements would be naturalistic nand/nor realistic?

My

*, without any research, are that:*

**guesses**I. 1 probably happens in a natlang; and,

I. 2 somewhat-less-probably-but-still probably also happens in a natlang; and,

I. if one of them doesn't happen in any natlang it is probably 3; and,

II. that it's by no means improbable that 1 and 2 do not both happen together in any natlang.

III. If those guesses are true, then the answer to III is "no".

My

**about IV and V are, that EITHER all 3Cons roots in the daughterlang that are derived from the protolang are derived from a root + a suffix, OR ELSE all 3Cons roots in the daughterlang that are derived from the protolang are derived from a prefix + a root.**

*guesses*If 1 and 2 can happen together in a natlang, then I

**3 can also happen in (either the same or some different) natlang.**

*guess*Conversely if 3 can happen in some natlang, then I

**the combinations 1+2, and 1+3, and 2+3, can also happen in some natlang.**

*guess*Is anyone aware of any already-existing conlang that would be relevant for this question?

Some of us are working on (or have worked on) 3Cons conlangs; some of those are working on (or have worked on) deriving that conlang from a 2Cons con-proto-lang.

If you are one of those, which of statements 1 and/or 2 and/or 3 do you plan to make true of your conlang?

**Edit:**I could have also added a 4th* statement:

1) Maybe: For any six consonants C1, C2, C3, C4, C5, and C6;

If any three of C1-C3-C5, C1-C4-C5, C2-C3-C6, or C2-C4-C6, are attested roots in the 'lang;

then (a) "with (overwhelmingly?) greater-than-chance frequency", the fourth one is also a root in the 'lang,

AND: (1b) "with (overwhelmingly?) greater-than-chance frequency", the semantic relationship between C1-C3-C5 and C1-C4-C5, is the same (or almost the same?) as the semantic relationship between C2-C3-C6 and C2-C4-C6.

I didn't because I thought that had to be a minority phenomenon, if it occurred at all; I think it could happen only if the 2Cons protolang were heavy on infixes.

So it's not impossible but less likely than the other three IMO (or, rather, IMG).

*1 has to do with suffixes in the protolang, and 2 has to do with prefixes in the protolang, and 3 has to do with both together. Clearly I could have made a 5th and 6th statement about suffixes-with-infixes and respectively prefixes-with-infixes in the protolang. I didn't.