On Dobrushin's central limit theorem for non-homogeneous Markov chain array scheme

A new version of a sufficient condition of a Dobrushin type is proposed for non-homogeneous Markov chains for a certain class of such processes. The original Dobrushin's condition may fail, yet, the CLT is still valid
Comment: 18 pages, 13 references, in Russian language; in comparison to v2 version, two more examples were added