Remember that English also suffers from digraphs. e.g. ch, th, sh, wr, oo; etc See https://en.wikipedia.org/wiki/Digraph_(orthography)#English https://en.wiki

Remember that English also suffers from digraphs. e.g. ch, th, sh, wr, oo; etc See https://en.wikipedia.org/wiki/Digraph_(orthography)#English https://en.wikipedia.org/wiki/Digraph_(orthography)#English That page lists 15 such over and above the doubled letters.