For loop in tabular with multicolumn

Question

Can I do this without adding a new line and then remove the new line? I would like to skip \\[-0.4cm]. It just feels wrong

\documentclass[12pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{float}
\usepackage{geometry}
\usepackage{forloop}
\usepackage{graphicx}
\geometry{a4paper, left=2.5mm, top=2.5mm,bottom=2.5mm,right=2.5mm}
\newcounter{i}
\newcommand{\mylineNewTwo}[1]{%
    \forloop{i}{0}{\value{i}<#1}%
    {%
    \[-0.4cm]% is it possible to do this without this line??
    \multicolumn{2}{l}{Line1}\
    \multicolumn{1}{c}{} & Line2\
    \multicolumn{2}{l}{Line3}\
    \multicolumn{2}{l}{Line4}\
    \multicolumn{1}{c}{} & Line5\
    \multicolumn{2}{l}{Line6L\hfill Line6R}\
    }
}
\begin{document}
    \begin{figure}[H]
        \centering
        \resizebox{\textwidth}{!}{
            \begin{tabular}{@{}p{0.5cm}@{}@{}p{6.8cm}@{}}
                \mylineNewTwo{10}
            \end{tabular}
            \begin{tabular}{@{}p{0.5cm}@{}@{}p{6.8cm}@{}}
                \mylineNewTwo{10}
            \end{tabular}
            \begin{tabular}{@{}p{0.5cm}@{}@{}p{6.8cm}@{}}
                \mylineNewTwo{10}
            \end{tabular}
        }
    \end{figure}
\end{document}