I'm going crazy in trying to draw the following table in LaTeX:

[![enter image description here](https://i.stack.imgur.com/hlJfG.png)](https://i.stack.imgur.com/hlJfG.png)

Can you help me please? Thank you in advance

Here's what I've done:

```
\begin{tabular}{c c c}

   A & \multicolumn{2}{c}{B}\\ E & F \\ C\\
   D & G\\

\end{tabular}

```

Thank you all, guys, but I have to draw a table just using the following packages: array, multirow, tabularx, and the supertabular.