Prefixes with -z as violations of the Russian spelling system

The article describes the paradoxical case of Russian spelling - the spelling of the prefixes ending with -z, based on the phonetic principle which, without any reason, sets them apart from other prefixes ending with a consonant (под-, над-, от-, об-, в-, с-), according to the main phonological principle of Russian spelling. The analysis of numerous sentences concerning the spelling of these prefixes, which was discussed by spelling committees before and after the 1917 spelling reform, is carried out from the point of view of practicability and scientific validity. Rare archival materials were used in the article. It is concluded that it is necessary to bring the prefixes ending with consonants to the common denominator, since the spelling of the prefixes ending with -z violates the Russian system of writing.