Approximately,
\[
\begin{alignedat}{4}
A^\prime_{\mathbf{7c}}&{}\approx{}&0.000000000000&{}:{}&-1.366025403784&{}:{}&2.366025403784&,\\B^\prime_{\mathbf{7c}}&{}\approx{}&-1.366025403784&{}:{}&0.000000000000&{}:{}&2.366025403784&,\\C^\prime_{\mathbf{7c}}&{}\approx{}&-0.137996589020&{}:{}&-0.137996589020&{}:{}&1.275993178039&,
\\
A^{\prime\prime}_{\mathbf{7c}}&{}\approx{}&-0.250670332134&{}:{}&-0.125335166067&{}:{}&1.376005498201&,\\B^{\prime\prime}_{\mathbf{7c}}&{}\approx{}&-0.125335166067&{}:{}&-0.250670332134&{}:{}&1.376005498201&,\\C^{\prime\prime}_{\mathbf{7c}}&{}\approx{}&-0.683012701892&{}:{}&-0.683012701892&{}:{}&2.366025403784&,
\\
A^{\prime\prime\prime}_{\mathbf{7c}}&{}\approx{}&-0.121262743976&{}:{}&-0.000000000000&{}:{}&1.121262743976&,\\B^{\prime\prime\prime}_{\mathbf{7c}}&{}\approx{}&0.000000000000&{}:{}&-0.121262743976&{}:{}&1.121262743976&,\\C^{\prime\prime\prime}_{\mathbf{7c}}&{}\approx{}&0.000000000000&{}:{}&0.000000000000&{}:{}&1.000000000000&,
\\
A^*_{\mathbf{7c}}&{}\approx{}&0.000000000000&{}:{}&0.307007203691&{}:{}&0.692992796309&,\\B^*_{\mathbf{7c}}&{}\approx{}&0.307007203691&{}:{}&0.000000000000&{}:{}&0.692992796309&,\\C^*_{\mathbf{7c}}&{}\approx{}&0.500000000000&{}:{}&0.500000000000&{}:{}&0.000000000000&.
\end{alignedat}
\]