Approximately,
\[
\begin{alignedat}{4}
A^\prime_{\mathbf{7c}}&{}\approx{}&0.500000000000&{}:{}&-1.207106781187&{}:{}&1.707106781187&,\\B^\prime_{\mathbf{7c}}&{}\approx{}&-1.207106781187&{}:{}&0.500000000000&{}:{}&1.707106781187&,\\C^\prime_{\mathbf{7c}}&{}\approx{}&-0.066454497351&{}:{}&-0.066454497351&{}:{}&1.132908994701&,
\\
A^{\prime\prime}_{\mathbf{7c}}&{}\approx{}&-0.125973796069&{}:{}&-0.036896870617&{}:{}&1.162870666686&,\\B^{\prime\prime}_{\mathbf{7c}}&{}\approx{}&-0.036896870617&{}:{}&-0.125973796069&{}:{}&1.162870666686&,\\C^{\prime\prime}_{\mathbf{7c}}&{}\approx{}&-0.353553390593&{}:{}&-0.353553390593&{}:{}&1.707106781187&,
\\
A^{\prime\prime\prime}_{\mathbf{7c}}&{}\approx{}&-0.060745576363&{}:{}&0.025161641584&{}:{}&1.035583934779&,\\B^{\prime\prime\prime}_{\mathbf{7c}}&{}\approx{}&0.025161641584&{}:{}&-0.060745576363&{}:{}&1.035583934779&,\\C^{\prime\prime\prime}_{\mathbf{7c}}&{}\approx{}&0.184699031259&{}:{}&0.184699031259&{}:{}&0.630601937482&,
\\
A^*_{\mathbf{7c}}&{}\approx{}&0.000000000000&{}:{}&0.216772751325&{}:{}&0.783227248675&,\\B^*_{\mathbf{7c}}&{}\approx{}&0.216772751325&{}:{}&0.000000000000&{}:{}&0.783227248675&,\\C^*_{\mathbf{7c}}&{}\approx{}&0.500000000000&{}:{}&0.500000000000&{}:{}&0.000000000000&.
\end{alignedat}
\]