features of this category are excluded and no longer 
exist. The grammatical class has not disappeared 
without a trace. The voice category in these languages 
has not been formed seeing that, in spite of the fact 
that the grammatical class has disappeared as a full-
fledged morphological phenomenon, the lability 
remains and, therefore, the ability to distinguish 
between active and passive character exists. On the 
one hand, there are languages with personal 
conjugation (Adygean, Udine...) in which the class 
conjugation has been destroyed, but the lability is 
preserved and the category of the voice has not been 
formed. On the other hand, there is a model of 
personal conjugation in which the lability has been 
partly or largely obscured together with the class 
conjugation, the model of object conjugation has 
collapsed, but the object conjugation has still 
survived (gaqeb me šen "I praise you"...). In order to 
compensate for the lost class and lability, in contrast 
to the North Caucasian languages, voice grades, 
rounds and series were formed.  
Thus: 
1.  The morphosyntactic basic system of the 
Iberian-Caucasian languages included the 
following categories: grammatical class, 
ergative-nominative, labile-stable, dynamic-
static, semantic distinction of active-passive 
nature. 
2.  Stage 2 preserves all the above categories, but 
the grammatical class expression weakens and 
the process of collapse of this category in the 
so-called peripheral languages begins, but the 
process of collapse at this stage is not yet 
complete. Along with the collapse of the class 
the opposition labile-stability weakens, but in 
all Iberian-Caucasian languages the direct 
object-marking priority of the verb is 
preserved. Consequently, at this stage the 
formation of the declension system, the case-
marking begins. At the 1st stage no cases are 
marked, but there are constructions: 
nominative, ergative, reflected in the verb (cf. 
Abkhazian). Abkhazian remained in Stage 1 for 
the formation of cases, and in Stage 3 for the 
formation of conjugation. 
3.  At the 3rd stage the functioning 
morphosyntactic phenomenon - grammatical 
class is no longer marked, has completely 
disintegrated as a functioning morphological 
category, but has not disappeared without a 
trace (participles, word-formation, 
substances...). Lability-stability is lost, but the 
"trace" remains; ergativity-transitivity becomes 
more evident, leading to the final formation of 
the system of declension. At this stage the 
category of voice can be distinguished. 
Thus, Stage 1 is well preserved in the North 
Caucasian languages (except Adygean and some 
Lezgi languages...). Stage 2 is a transitional stage, and 
Stage 3 is represented in the Kartvelian languages. 
The grammatical class contains notions of labiality 
and ergativity, including the ability to meaningfully 
and formally distinguish between active and passive. 
Class conjugation, as the initial conjugation for 
Iberian-Caucasian languages, is built precisely on 
lability-ergativity, where the priority in expressing 
the active character belongs to the recipient, unlike in 
Indo-European, Turkish and other languages. 
In non-Iberian-Caucasian languages, the active 
and passive actants are always in the nominative case. 
Here there is only a nominative construction. Hence, 
there is no class, no labiality and ergativity, no 
pronounced transitivity-non-transitivity distinction as 
in the Iberian-Caucasian languages. 
The objective conjugation in Georgian (gaqeb me 
šen ... "I praise you...") can only be explained by the 
fact that morphosyntactic conjugation constructions 
of the Kartvelian languages were formed as one of the 
diasystems of the morphosyntactic frame model - 
system of Iberian-Caucasian languages - a historical 
departure from the core system and reinterpretation of 
the system expressing the change of actants valence 
(class - class-person - person), lability being lost with 
the grammatical class and as a "compensation" the 
voice developed. 
There are three different approaches to 
understanding the category of voice in linguistic 
Kartvelology:1. A. Shanidze: There are three types of 
voice: active, passive, and middle (Kipshidze, 1994) 
2. Arn. Chikobava: A verb can show active and 
passive voice (Chikobava, 1979). 3. B. Jorbenadze: 
Middle is one of the components of the voice, but at 
the same time it is static. Active and passive voice 
forms are opposed to the verb of the middle voice, 
static to dynamic (Jorbenadze, 1975). 
The Zanskij (Mingrelo-Lazian) material supports 
the viewpoint of Arn. Chikobava. There are only two 
voices in Zanski: active and passive. As for the so-
called middle voice, T. Uturgaidze's point of view 
seems acceptable: verbs (qris "blows", ts’uxs 
"worries", duγs "boils", dgas "stands", ts’evs "lies"...) 
became medium after the category of voice 
(Uturgaidze, 2002).  D. Melikishvili's point of view is 
also noteworthy: the agent of these verbs is the same 
subject (ts’uxs is - tvitonve mts’uxarea - "He is sad - 
himself is sad"). The subject of these verbs is self-
acting, its action is reciprocal (Melikishvili, 2001). 
Obviously, it is necessary to distinguish the verbs of