The shortest distance, between lines \( L_1 \) and \( L_2 \), where \( L_1:\; \dfrac{x-1}{2}=\dfrac{y+1}{-3}=\dfrac{z+4}{2} \) and \( L_2 \) s the line, passing through the line, passing through the points \( A=(-4,4,3), B=(-1,6,3) \) and perpendicular to the line \( \dfrac{x-3}{-2}=\dfrac{y}{3}=\dfrac{z-1}{1} \) is:
