\def\lbshframe #1#2#3#4{\vbox{\hrule height 0pt% \hbox{\vrule width #1pt\kern 0pt% \vbox{\kern-#1pt\frame{.3}{#2}{#3}{#4}% \kern-.3pt}% \kern-#1pt\vrule width 0pt}% \hrule height #1pt}} \lbshframe{4}{10}{23pc}{\copy4}\lbshframe{4}{10}{23pc}{\copy4}