Approximately,
\[
\begin{alignedat}{4}
A^\prime_{\mathbf{6a}}&{}\approx{}&1.244016935856&{}:{}&-0.122008467928&{}:{}&-0.122008467928&,\\B^\prime_{\mathbf{6a}}&{}\approx{}&5.098076211353&{}:{}&1.000000000000&{}:{}&-5.098076211353&,\\C^\prime_{\mathbf{6a}}&{}\approx{}&1.098076211353&{}:{}&-1.098076211353&{}:{}&1.000000000000&,
\\
A^{\prime\prime}_{\mathbf{6a}}&{}\approx{}&1.806952388982&{}:{}&-0.726257150084&{}:{}&-0.080695238898&,\\B^{\prime\prime}_{\mathbf{6a}}&{}\approx{}&1.229422863406&{}:{}&-0.219615242271&{}:{}&-0.009807621135&,\\C^{\prime\prime}_{\mathbf{6a}}&{}\approx{}&1.334097441518&{}:{}&-0.095783886799&{}:{}&-0.238313554719&,
\\
A^{\prime\prime\prime}_{\mathbf{6a}}&{}\approx{}&0.474645386743&{}:{}&0.093102842536&{}:{}&0.432251770720&,\\B^{\prime\prime\prime}_{\mathbf{6a}}&{}\approx{}&1.008837226334&{}:{}&-0.098942933031&{}:{}&0.090105706697&,\\C^{\prime\prime\prime}_{\mathbf{6a}}&{}\approx{}&1.085585763082&{}:{}&0.020884375660&{}:{}&-0.106470138742&,
\\
A^*_{\mathbf{6a}}&{}\approx{}&0.000000000000&{}:{}&1.500000000000&{}:{}&-0.500000000000&,\\B^*_{\mathbf{6a}}&{}\approx{}&0.866025403784&{}:{}&0.000000000000&{}:{}&0.133974596216&,\\C^*_{\mathbf{6a}}&{}\approx{}&1.866025403784&{}:{}&-0.866025403784&{}:{}&0.000000000000&.
\end{alignedat}
\]