\begin{array}{lllll}
 & \text{1D49} & \text{1D4A} & \text{1D4B} & \text{1D4C} \\
\text{0} & & @ & \mathcal{U} & \mathcal{k} \\
\text{1} & & @ & \mathcal{V} & \mathcal{l} \\
\text{2} & & \mathcal{G} & \mathcal{W} & \mathcal{m} \\
\text{3} & & @ & \mathcal{X} & \mathcal{n} \\
\text{4} & & @ & \mathcal{Y} & @ \\
\text{5} & & \mathcal{J} & \mathcal{Z} & \mathcal{p} \\
\text{6} & & \mathcal{K} & \mathcal{a} & \mathcal{q} \\
\text{7} & & @ & \mathcal{b} & \mathcal{r} \\
\text{8} & & @ & \mathcal{c} & \mathcal{s} \\
\text{9} & & \mathcal{N} & \mathcal{d} & \mathcal{t} \\
\text{A} & & \mathcal{O} & @ & \mathcal{u} \\
\text{B} & & \mathcal{P} & \mathcal{f} & \mathcal{v} \\
\text{C} & \mathcal{A} & \mathcal{Q} & @ & \mathcal{w} \\
\text{D} & @ & @ & \mathcal{h} & \mathcal{x} \\
\text{E} & \mathcal{C} & \mathcal{S} & \mathcal{i} & \mathcal{y} \\
\text{F} & \mathcal{D} & \mathcal{T} & \mathcal{j} & \mathcal{z} \\
\end{array}
