Repetition-free functions of the algebra of logic in pre-elementary bases

Functions of the algebra of logic that can be realized by repetition-free formulas over finite bases are studied. Necessary and sufficient conditions are derived under which functions of the algebra of logic are repetition-free in pre-elementary bases $\{-,\cdot,\vee,0,1,x_1\cdot\ldots\cdot x_n\vee \bar{x}_1\cdot\ldots\cdot \bar{x}_n\}$ and $\{-,\cdot,\vee,0,1,x_1(x_2\vee x_3\cdot\ldots\cdot x_n)\vee x_2\bar{x}_3 \cdot\ldots\cdot\bar{x}_n\}$ where $n\geq 4$. This completes the description of classes of repetition-free functions of the algebra of logic in all pre-elementary bases.