\documentclass[showtrims,a6paper,9pt,english]{memoir}
\usepackage{babel}
\settrimmedsize{0.65\stockheight}{0.6\stockwidth}{*}
\settypeblocksize{7cm}{4cm}{*}
\setlrmargins{1cm}**
\setulmargins{1cm}**
\setheadfoot{10pt}{10pt}
\setheaderspaces{10pt}**
\settrims{7.5em}{6.5em}
\checkandfixthelayout
\usepackage{blindtext}
\setcounter{blindtext}{1}
\pagestyle{empty}
\begin{document}
\small
\trimXmarks
\blindtext
\newpage
\trimLmarks
\blindtext
\newpage
\trimFrame
\blindtext
\newpage
\quarkmarks
\blindtext
\end{document}

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