\PGset[0.8em]
\begin{picture}(38,8)

% AB = 21, AO = 3, AD = 6
\drawline(1,1)(22,1)(22,7)(1,7)(1,1) % ABCD

% AE = 12, AO = 3, AD = 6
\drawline(25,1)(37,1)(37,7)(25,7)(25,1) % AEFD

\dashline[80]{0.2}(4,1)(4,7)
\dashline[80]{0.2}(7,1)(7,7)
\dashline[80]{0.2}(10,1)(10,7)
\dashline[80]{0.2}(13,1)(13,7)
\dashline[80]{0.2}(16,1)(16,7)
\dashline[80]{0.2}(19,1)(19,7)

\dashline[80]{0.2}(28,1)(28,7)
\dashline[80]{0.2}(31,1)(31,7)
\dashline[80]{0.2}(34,1)(34,7)

\put( 0.3, 0.5){$\scriptstyle A$}
\put(22.1, 0.5){$\scriptstyle B$}
\put(22.1, 6.7){$\scriptstyle C$}
\put( 0.2, 6.7){$\scriptstyle D$}
\put( 3.7, 0.2){$\scriptstyle O$}

\put(24.3, 0.5){$\scriptstyle A$}
\put(37.1, 0.5){$\scriptstyle E$}
\put(37.1, 6.7){$\scriptstyle F$}
\put(24.2, 6.7){$\scriptstyle D$}
\put(27.7, 0.2){$\scriptstyle O$}

\end{picture}
\PGrestore