Question: Find the LCD (least common denominator) for:
\[\frac{\mathrm{1}}{\mathrm{8y}}\mathrm{,}\frac{\mathrm{1}}{\mathrm{4}{{\mathrm{y}}^{\mathrm{2}}}}\mathrm{and}\frac{\mathrm{1}}{{{\mathrm{y}}^{\mathrm{3}}}}\]