The output strings of standard WordPress function comments-number are correct for languages having only a singular and plural form. But, for example, Slavic languages have singular and plural, and a special form (paucal) for numbers where the last digit is 2, 3 or 4, (excluding endings of 12, 13 and 14). In addition, Slovenian preserved pure dual, using it for numbers ending in 2. In Serbo-Croatian (in addition to the paucal for numbers 2-4), several nouns have alternate forms for counting plural and collective plural (the latter being treated as a collective noun) … etc. This is a problem. multilingual-comments-number plugin corrects this problem.