Approximately,
\[
\begin{alignedat}{4}
A^\prime_{\mathbf{1c}}&{}\approx{}&1.000000000000&{}:{}&-1.366025403784&{}:{}&1.366025403784&,\\B^\prime_{\mathbf{1c}}&{}\approx{}&-1.366025403784&{}:{}&1.000000000000&{}:{}&1.366025403784&,\\C^\prime_{\mathbf{1c}}&{}\approx{}&-1.366025403784&{}:{}&-1.366025403784&{}:{}&3.732050807569&,
\\
A^{\prime\prime}_{\mathbf{1c}}&{}\approx{}&-1.366025403784&{}:{}&-0.183012701892&{}:{}&2.549038105677&,\\B^{\prime\prime}_{\mathbf{1c}}&{}\approx{}&-0.183012701892&{}:{}&-1.366025403784&{}:{}&2.549038105677&,\\C^{\prime\prime}_{\mathbf{1c}}&{}\approx{}&-0.183012701892&{}:{}&-0.183012701892&{}:{}&1.366025403784&,
\\
A^{\prime\prime\prime}_{\mathbf{1c}}&{}\approx{}&-0.405827419558&{}:{}&0.297086290221&{}:{}&1.108741129337&,\\B^{\prime\prime\prime}_{\mathbf{1c}}&{}\approx{}&0.297086290221&{}:{}&-0.405827419558&{}:{}&1.108741129337&,\\C^{\prime\prime\prime}_{\mathbf{1c}}&{}\approx{}&0.297086290221&{}:{}&0.297086290221&{}:{}&0.405827419558&,
\\
A^*_{\mathbf{1c}}&{}\approx{}&0.000000000000&{}:{}&-0.866025403784&{}:{}&1.866025403784&,\\B^*_{\mathbf{1c}}&{}\approx{}&-0.866025403784&{}:{}&0.000000000000&{}:{}&1.866025403784&,\\C^*_{\mathbf{1c}}&{}\approx{}&0.500000000000&{}:{}&0.500000000000&{}:{}&0.000000000000&.
\end{alignedat}
\]