%_Both.pdf: %_Cu.pdf %_Mask.pdf
	pdftk ${^} cat output ${@}

%_90.pdf: %_Both.pdf
	pdftk ${<} cat 1-endeast output ${@}

%_90.ps: %_90.pdf
	pdftops $<

%_nup.ps: %_90.ps
	psnup -pa4 -Pa5 -2 ${<} ${@}

%_nup.pdf: %_nup.ps
	ps2pdf ${<}

%.pdf: %_nup.pdf
	cp ${<} ${@}