Abc ABC abc abC aBc abc Unicode Normalization has to deal with more issues: single or multiple combining markssingle or multiple combining marks compatibility characterscompatibility characters presentation formspresentation forms Ǻ U+01FA U+00C5 U+0301 U+00C1 U+030A U+212B U+0301 U+0041 U+0301 U+030A U+0041 U+030A U+0301
{}