\mybox{green}{aa}%
\mybox{yellow}{ab}%
\mybox{red}{ac}%
\mybox{green}{ad}%
\mybox{yellow}{ae}%
\mybox{red}{af}%
\mybox{green}{ag}%
\mybox{yellow}{ah}%
\mybox{red}{ai}%
\mybox{green}{aj}%
\mybox{yellow}{ak}%
\mybox{red}{al}%
\mybox{green}{am}%
\mybox{yellow}{an}%
\mybox{red}{ao}%
\mybox{green}{ap}%
\mybox{yellow}{aa}%
\mybox{red}{ab}%
\mybox{green}{ac}%
\mybox{yellow}{ad}%
\mybox{red}{ae}%
\mybox{green}{af}%
\mybox{yellow}{ag}%
\mybox{red}{ah}%
\mybox{green}{ai}%
\mybox{yellow}{aj}%
\mybox{red}{ak}%
\mybox{green}{al}%
\\
\mybox{yellow}{ba}%
\mybox{red}{bb}%
\mybox{green}{bc}%
\mybox{yellow}{bd}%
\mybox{red}{be}%
\mybox{green}{bf}%
\mybox{yellow}{bg}%
…