By completing the square, put the equation

$$x^{2}-36y^{2}+z^{2}+6x-12z = -45$$
into the standard form $a (x-x_0)^2 + b(y-y_0)^2 + c(z-z_0)^2 = d$. Then, use your answer to sketch a graph of this quadric surface on paper.

$\big($ $\big)^2 +$ $\big($ $\big)^2 +$ $\big($ $\big)^2 =$