We analyze frustrated states of the one-dimensional dilute Ising chain with charged interacting impurities of two types with the mapping of the system to some Markov chain. We perform classification and reveal two types of Markov chains: periodic, with a period of 2, and aperiodic. Frustrated phases with various types of chains have different properties. In phases with periodic Markov chains, long-range order is observed in the sublattice, while another sublattice remains disordered. This results in a conjunction of the non-zero residual entropy and the infinite correlation length. In frustrated phases with aperiodic chains, there is no long-range order, and the correlation length remains finite. It is shown that under the magnetic field the most significant change in the spin chain structure corresponds to the change of the Markov chain type. Keywords: Markov chains, dilute Ising magnet, frustration, low-dimensional systems, ground state.

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