> >Since there are 676 possible digraph combinations, > > Stop being so ethnocentric. The extended Latin alphabet alone is much > larger than 26 characters, and that ignores all the Cyrillic languages, > some of which were probably written with digraphs.
And the problem doesn't stop with digraphs. Trigraphs are not uncommon in various orthographies (eg. /khw/ or /k<super>hw</super>/ for an aspirated, labialized velar stop), and some extreme case orthographies are known that employ up to *hepta*graphs! --Ken

