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\put(30,65){\shortstack[l]{d}}
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\put(75,40){\shortstack[l]{j}}
\put(44,52){\shortstack[l]{k}}
\put(73,21){\shortstack[l]{m}}
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\put(64,74.5){\shortstack[l]{\footnotesize $Q_2$}}
\put(56,22){\shortstack[l]{\footnotesize $Q_3$}}
\put(17,40){\shortstack[l]{\footnotesize 0 Volts}}
\put(64,68){\shortstack[l]{\footnotesize $-5$}}
\put(15,70){\shortstack[l]{\footnotesize $-5$}}
\put(48,33){\shortstack[l]{\footnotesize $+5$}}
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