$$\begin{array}{cccc}\hfill \hfill & \hfill \mathrm{\text{207}}\hfill & \hfill \mathrm{\text{208}}\hfill & \hfill \mathrm{\text{209}}\hfill \\ \hfill \mathrm{\text{0}}\hfill & \hfill ⁰\hfill & \hfill ₀\hfill & \hfill ₐ\hfill \\ \hfill \mathrm{\text{1}}\hfill & \hfill ⁱ\hfill & \hfill ₁\hfill & \hfill ₑ\hfill \\ \hfill \mathrm{\text{2}}\hfill & \hfill @\hfill & \hfill ₂\hfill & \hfill ₒ\hfill \\ \hfill \mathrm{\text{3}}\hfill & \hfill @\hfill & \hfill ₃\hfill & \hfill ₓ\hfill \\ \hfill \mathrm{\text{4}}\hfill & \hfill ⁴\hfill & \hfill ₄\hfill & \hfill ₔ\hfill \\ \hfill \mathrm{\text{5}}\hfill & \hfill ⁵\hfill & \hfill ₅\hfill & \hfill @\hfill \\ \hfill \mathrm{\text{6}}\hfill & \hfill ⁶\hfill & \hfill ₆\hfill & \hfill @\hfill \\ \hfill \mathrm{\text{7}}\hfill & \hfill ⁷\hfill & \hfill ₇\hfill & \hfill @\hfill \\ \hfill \mathrm{\text{8}}\hfill & \hfill ⁸\hfill & \hfill ₈\hfill & \hfill @\hfill \\ \hfill \mathrm{\text{9}}\hfill & \hfill ⁹\hfill & \hfill ₉\hfill & \hfill @\hfill \\ \hfill \mathrm{\text{A}}\hfill & \hfill ⁺\hfill & \hfill ₊\hfill & \hfill @\hfill \\ \hfill \mathrm{\text{B}}\hfill & \hfill ⁻\hfill & \hfill ₋\hfill & \hfill @\hfill \\ \hfill \mathrm{\text{C}}\hfill & \hfill ⁼\hfill & \hfill ₌\hfill & \hfill @\hfill \\ \hfill \mathrm{\text{D}}\hfill & \hfill ⁽\hfill & \hfill ₍\hfill & \hfill @\hfill \\ \hfill \mathrm{\text{E}}\hfill & \hfill ⁾\hfill & \hfill ₎\hfill & \hfill @\hfill \\ \hfill \mathrm{\text{F}}\hfill & \hfill ⁿ\hfill & \hfill @\hfill & \hfill @\hfill \end{array}$$