geometry of the coded part.

Example:

Each number represents the amount of blocks stacked on top of one another. On the far left of the object, there would be $3$ cubes stacked. In the center, there would be $2$ stacked cubes. On the far right, there would only be a single cube. Try to imagine what this part would look like.

twould look like this:

$2\mathrm{.}1$ Q$4$

a$.$

b$.$

c$.$