# Top alignment in array environment

I have an array which has a few columns, and each of the columns contains again an array. The problem is that the three arrays are vertically aligned with respect to the center. How to align them on the top?

Here is a simple example

\documentclass[12pt]{amsart}
\begin{document}
$\begin{array}{llll} \begin{array}{|l|l|l|} \hline a& b& c\\ \hline 1&1&0\\1&2&3\\ 4 & 5& 6\\ \hline\end{array}& \begin{array}{|l|l|l|} \hline a& b& c\\ \hline 1&3&4\\1&2&3\\ 4&5&6\\ 7&9&8\\ \hline\end{array}& \begin{array}{|l|l|l|} \hline a& b& c\\ \hline 1&2&5\\1&2&3\\ \hline\end{array}\end{array}$
\end{document}


which gives

but I would like to have something like this:

• \begin{array}[t] – David Carlisle Nov 10 '17 at 8:45

For each of the three inner array environments, you need to change
\begin{array}{|l|l|l|}

\begin{array}[t]{|l|l|l|}

Adding the [t] positioning specifier to the outer array doesn't hurt, but it doesn't do anything in particular either.