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$U_A=\color{blue}{-U_D}-U_C$
$U_A=\color{blue}{-U_D}-U_C$
$U_A=\color{blue}{-U_D}-U_C$
$U_A=\color{blue}{-U_D}-U_C$
$U_A=\color{blue}{-U_D}-U_C$
$U_A=\color{blue}{-U_D}-U_C$
$U_A=\color{blue}{-U_D}-U_C$
$U_A=\color{blue}{-U_D}-U_C$
$U_A=\color{blue}{-U_D}-U_C$
