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\item \self Use the DPLL algorithm with \textit{Boolean Constrain Propagation} (\emph{without} PL and clause learning) to determine whether or not the set of clauses given is satisfiable. Decide variables in alphabetical order starting with the \textit{positive} phase. If the set of clauses resulted in \texttt{SAT}, give a satisfying model.
\begin{dpllCNFInput}
\item $(\lnot d \lor \lnot b \lor \lnot a)$
\item $(\lnot e \lor a \lor \lnot f)$
\item $(\lnot a \lor c \lor b)$
\item $(f \lor a \lor e)$
\item $(d \lor \lnot a \lor \lnot b)$
\item $(\lnot a \lor \lnot c \lor b)$
\end{dpllCNFInput}
% (not d or not b or not a) and (not e or a or not f) and (not a or c or b) and (f or a or e) and (d or not a or not b) and (not a or not c or b)