```
   \documentclass[12pt]{article} 

\usepackage[T1,T2A]{fontenc}
\usepackage[mathletters]{ucs}
\usepackage[utf8]{inputenc}
\usepackage[english,ukrainian]{babel}
\usepackage{ulem}
\usepackage{amsmath}
\usepackage{multirow}
\usepackage{slashbox}

\begin{document}
    \begin{tabular}{| c | c | c | c |}
        \hline
        \multicolumn{4}{|c|}{} \\
        \hline
        \multirow{3}{*}{\slashbox{}{}} & & &\\
        \cline{2-4} & & & \\
        \cline{2-4} & & & \\
        \cline{2-4} & & & \\
        \hline
        \multicolumn{3}{|c|}{} & \\
        \hline
    \end{tabular}
\end{document}

```

[![enter image description here](https://i.stack.imgur.com/PcKWM.png)](https://i.stack.imgur.com/PcKWM.png)
this is how the table should turn out, but there are problems with the dash in column 1.
It seems to me something with the size, because when I increase this column, the line falls into place