Editing Polivanov system (section)

== Vowel omission ==
Normally, vowels in the Polivanov system are always spelled, even if they are not pronounced. However, the voiceless ''u'' in the name ending ''-suke'' may be omitted:

''Ryūno'''suke''' → Рюно'''скэ'''.''

Some translators tend to omit voiceless ''u'' in all cases when ''su'' (and, less often, ''tsu'') is followed by a ''k-''syllable, e.g. ''[[Akatsuki (disambiguation)|Akatsuki]]'' → ''Акацки'', ''[[Daisuki (disambiguation)|Daisuki]]'' → ''Дайски''. However, this omission is considered non-standard.

Another non-standard (if not controversial) practice is omitting the voiceless ''u'' at the end of words, mostly in ''desu → дэс'' and ''masu → мас''. This spelling can be found in some learning materials, but most professional translators oppose it, because native speakers may pronounce ''su'' at the end of the word with a distinctive ''u'' sound (especially in "feminine" speech).