% complile with »pdflatex«
\documentclass[tikz,convert=pdf2svg]{standalone}
\usetikzlibrary{intersections}
\begin{document}
 \begin{tikzpicture}
  \coordinate (A') at (0,1.85);
  \coordinate (C) at (1.3,3.5);
  \coordinate (D) at (0,0);
  \coordinate (E') at (1.85,-0.3);
  \coordinate (F) at (3.65,0.5);
  \path[draw, name path=lineDC] (D) to[bend left=27] (C);
  \path[draw, name path=lineFD] (F) to[bend left=27] (D);
  \path[name path=lineA'F] (A') to[bend left=27] (F);
  \path[name path=lineCE'] (C) to[bend left=27] (E');
  \path[name intersections={of=lineA'F and lineDC,name=sectionA}];
  \coordinate (A) at (sectionA-1);
  \path[name intersections={of=lineFD and lineCE',name=sectionE}];
  \coordinate (E) at (sectionE-1);
  \path[draw, name path=lineAF] (A) to[bend left=27] (F);
  \path[draw, name path=lineCE] (C) to[bend left=27] (E);
  \path[name intersections={of=lineAF and lineCE,name=sectionB}];
  \coordinate (B) at (sectionB-1);
  \draw (A) +(180:0.2) node{$a$};
  \draw (B) +(45:0.2) node{$b$};
  \draw (C) +(90:0.2) node{$c$};
  \draw (D) +(-135:0.2) node{$d$};
  \draw (E) +(-90:0.2) node{$e$};
  \draw (F) +(0:0.2) node{$f$};
 \end{tikzpicture}
\end{document}