Is there a better way to repeat the content of a page?

Question

I am back with my table.

I edited it to use macros and it works very well. Now I was trying to print a single page twice on a recto-verso page. I ended up having 2 tables on 2 pages instead of 2 tables on 1 pages. I figured I can not do that and I should repeat my table to accommodate the printer.

So I used a macro to repeat the table and it works. But I wonder if there is a better way of doing that?

In case you are wondering, here is the code in my tex file:

    \documentclass{letter}

    \usepackage[a4paper, landscape, margin=0.5cm]{geometry}
    \usepackage{multirow}
    \usepackage{tabularx}
    \usepackage{graphicx}

    \setlength{\extrarowheight}{14pt}

    \newcommand\customTable{
            \begin{tabularx}{\textwidth}{cc|c|X|c|X|c|X|c|X|c|X|c|X|c|X|c|X|c|X|c|X|c|c|}
                    \cline{3-22}

                    & & \multicolumn{20}{ c| }{\LARGE Joueurs} \\ \cline{3-22}

                    & & \multicolumn{4}{ c| }{} & \multicolumn{4}{ c| }{} & \multicolumn{4}{ c| }{} & \multicolumn{4}{ c| }{} & \multicolumn{4}{ c| }{} \\ \cline{1-24}

                    \customRow{10}{\multirow{20}{*}{\rotatebox[origin=c]{90}{\LARGE Cartes}}}\cline{2-24}
                    \customRow{9}{}\cline{2-24}
                    \customRow{8}{}\cline{2-24}
                    \customRow{7}{}\cline{2-24}
                    \customRow{6}{}\cline{2-24}
                    \customRow{5}{}\cline{2-24}
                    \customRow{4}{}\cline{2-24}
                    \customRow{3}{}\cline{2-24}
                    \customRow{2}{}\cline{2-24}
                    \customRow{1}{}\cline{1-22}
            \end{tabularx}
    }
    \newcommand\customHeader[2]{
            \multicolumn{1}{|c}{#2} &
            \multicolumn{1}{|c|}{\multirow{2}{*}{\LARGE #1}}
    }
    \newcommand\emptyCells{
            & ~~~ & & ~~~ & & ~~~ & & ~~~ & & ~~~ & & ~~~ & & ~~~ & & ~~~ & & ~~~ & & ~~~ & & ~~~ & ~~~ \\
    }
    \newcommand\customBorder{
            \cline{3-3} \cline{5-5} \cline{7-7} \cline{9-9} \cline{11-11} \cline{13-13} \cline{15-15} \cline{17-17} \cline{19-19} \cline{21-21} \cline{23-24}
    }
    \newcommand\emptyDoubleCells{
            \multicolumn{1}{|c}{} & \multicolumn{1}{|c|}{} & \multicolumn{2}{c|}{} & \multicolumn{2}{c|}{} & \multicolumn{2}{c|}{} & \multicolumn{2}{c|}{} & \multicolumn{2}{c|}{} & \multicolumn{2}{c|}{} & \multicolumn{2}{c|}{} & \multicolumn{2}{c|}{} & \multicolumn{2}{c|}{} & \multicolumn{2}{c|}{} \\
    }
    \newcommand\customRow[2]{
            \customHeader{#1}{#2}\emptyCells\customBorder\emptyDoubleCells
    }


    \begin{document}
            \pagenumbering{gobble}
            \customTable
            \customTable
    \end{document}