Lack of numbers? Who interferes with all the letters of our alphabet? Foreigners will not be able to read numbers with the letters "b" "p" "z" "c" "ch"? their problems. The Chinese in the numbers in general hieroglyphs - and nothing.
For some reason, the use in Europe of number marks with the letters "f" "g" "i" "q" - is considered normal, and we, you see, are embarrassed.