\hspace{-0.09cm}\scalebox{0.85}{ \begin{dplltabular}{5} \dpllStep{12|13|14|15|16} \dpllDecL{0|0|0|0|0} \dpllAssi{ - |$a$|$a, b$|$a, b, \lnot c$|\makecell{$a, b, \lnot c, $ \\ $\lnot d$}} \dpllClause{1}{$a, \lnot b, c$}{$a, \lnot b, c$|\done|\done|\done|\done} \dpllClause{2}{$\lnot a, b$}{$\lnot a, b$|$b$|\done|\done|\done} \dpllClause{3}{$b, c$}{$b, c$|$b, c$|\done|\done|\done} \dpllClause{4}{$\lnot c, d$}{$\lnot c, d$|$\lnot c, d$|$\lnot c, d$|\done|\done} \dpllClause{5}{$\lnot c, e$}{$\lnot c, e$|$\lnot c, e$|$\lnot c, e$|\done|\done} \dpllClause{6}{$\lnot d, \lnot e$}{$\lnot d, \lnot e$|$\lnot d, \lnot e$|$\lnot d, \lnot e$|$\lnot d, \lnot e$|\done} \dpllClause{7}{$b$}{$b$|$b$|\done|\done|\done} \dpllClause{8}{$a$}{$a$|\done|\done|\done|\done} \dpllBCP{$a$|$b$| - | - | - } \dpllPL{ - | - |$\lnot c$|$\lnot d$| - } \dpllDeci{ - | - | - | - |SAT} \end{dplltabular} }