Answer
$ The\ Answer\ of\ c\ is: $
\begin{equation}
\begin{array}{l}{\text { D, } B, G, F, A, C, E, H} \\ {D, B, E, F, A, C, G, H} \\ {D, B, E, C, A, F, G, H} \\ {D, B, A, C, E, F, G, H} \\ {C, B, A, D, E, F, G, G} \\ {A, B, C, D, E, F, G, H}\end{array}
\end{equation}
Work Step by Step
$ The\ Answer\ of\ c\ is: $
\begin{equation}
\begin{array}{l}{\text { D, } B, G, F, A, C, E, H} \\ {D, B, E, F, A, C, G, H} \\ {D, B, E, C, A, F, G, H} \\ {D, B, A, C, E, F, G, H} \\ {C, B, A, D, E, F, G, G} \\ {A, B, C, D, E, F, G, H}\end{array}
\end{equation}