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Some suggestions: Don't overuse subfigure environments. I suggest that you replace the first subfigure environment with a minipage environment and that you leave off the second "outer" subfigure code entirely. Create some vertical separation between Figure 1 and Figure 2 (a,b,c) complex with a \vspace instruction. Maximize the horizontal separation between ...


solved the problem. just rotate the PDF on the pc and then this post should help you: Formatting figure captions overlayed with TikZ

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