elements and generators of U(14)
\begin{align*}\displaystyle
&\text{(a)the identity is } \color{red}{1} \\
&\text{(b) U(14) is the set } \color{red}{\{1,3,4,5,6,8,9,10,11,12,13\}}\\
&\text{(c) |1|}={\color{red}{1}} \text{ since }1.1 \equiv 12^1\\
&(d) |13|={\color{red}{2}}
\text{ since...