404   \texttt{SEQ(SEQ(SEQ(..., ONE | ONE) , ONE | ONE), ONE | ONE)}

   404   \texttt{SEQ(SEQ(SEQ(..., ONE | ONE) , ONE | ONE), ONE | ONE)}

   405   \]  

   405   \]  

   406 

   406 

   407   \noindent correctly to just \texttt{ONE}, where \texttt{SEQ} is nested

   407   \noindent correctly to just \texttt{ONE}, where \texttt{SEQ} is nested

   408   50 or more times?\\

   408   50 or more times?\\

   410 \end{itemize}

   410 \end{itemize}

   411 

   411 

   412 \subsection*{Background}

   412 \subsection*{Background}

   413 

   413 

   414 Although easily implementable in Scala, the idea behind the derivative

   414 Although easily implementable in Scala, the idea behind the derivative