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\begin{frame}
  \small
  
  \begin{definition}[State Transition]
  The current state:
  \turing{a_{-6},a_{-5},a_{-4},a_{-3},a_{-2},a_{-1},a_0,a_1,a_2,a_3,a_4,a_5,a_6}{q}{0}

  If \alert{$\delta(q,a_0) = (b,q',L)$}, then the following state is:
  \smallskip

  \turing{a_{-6},a_{-5},a_{-4},a_{-3},a_{-2},a_{-1},b,a_1,a_2,a_3,a_4,a_5,a_6}{q'}{-1}
  
  If \alert{$\delta(q,a_0) = (b,q',R)$}, then the following state is:
  \smallskip

  \turing{a_{-6},a_{-5},a_{-4},a_{-3},a_{-2},a_{-1},b,a_1,a_2,a_3,a_4,a_5,a_6}{q'}{1}
  \end{definition}  
\end{frame}