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by vkethana 748 days ago
I couldn't think of a good digraph for the "OO" in book. The most available option is "OH", but that might mislead readers into thinking "OH" = the "o" in "over" and not the "oo" in book.

"Ø", then, seems like the best choice. (Also, it's the coolest looking diacritic form of "O")