The following two blocks should be identical, including overflow. (Force bidi: א)

pppp pppX ppXp ppXX pXpp
pXpX pXXp pXXX Xppp XppX
XpXp XpXX XXpp XXpX XXXp

pppp pppX ppXp ‮ ppXp XXpp XppX pppX XXXp pXXp XpXp ppXX XXpX pXpX ‬ XXpX XXXp