deletions | additions       diff --git a/untitled.tex b/untitled.tex  index 8fe41ff..fed4224 100644  --- a/untitled.tex  +++ b/untitled.tex 
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\newcommand{\A}{\bb{A}}  \newcommand{\E}{\bb{E}}  \newcommand{\E}{\bb{B}} \newcommand{\B}{\bb{B}}  \begin{subequations}  \begin{align*}