多行多列表格问题

Question

我正在尝试制作一张像这样的桌子

但垂直文本有问题。有人能帮我创建表格吗？提前谢谢。

我的尝试

\usepackage{makecell}
\usepackage{supertabular}
\usepackage{array}
\usepackage{multirow}
\usepackage{rotating}

    \begin{supertabular}{| c | c | p{4cm} | p{4cm} | p{4cm} |}
\hline
\multicolumn{2}{|c|}{\textbf{Title}} & \textbf{Title} & 
\textbf{Title} & \textbf{Title}\\
\hline
\multirow{4}{*}[-3cm]{ \rotatebox[origin=c]{90}{R1}}
 & A Lot of Text   & really a lot of text really a lot of text 
 really a lot of text really a lot of text really a lot of text 
 really a lot of text really a lot of text &  &  \\
\cline{2-5}

& A Lot of Text   & really a lot of text really a lot of text 
really a lot of text really a lot of text really a lot of text 
really a lot of text really a lot of text & & \\


\hline

\multirow{4}{*}[-1 cm]{ \rotatebox[origin=c]{90}{R1}}
 & A Lot of Text   & really a lot of text really a lot of text 
 really a lot of text really a lot of text really a lot of text 
 really a lot of text really a lot of text &  &  \\
\hline
\end{supertabular}

更新：我能够创建表格（不完全是，但对我来说是可行的）。现在我关心的是让它与多页表兼容。