always use single width accented characters

[Dan Jacobson <jidanni@jidanni.org>]

Today I discovered a Help page titled:
  Characters in the charset chinese-sisheng.

Finally single width accented U+01CE etc.!
(Who can stand mixed single/doublewidth Pinyin?)

OK, how does one correct emacs-version 21.4.1 to instead use them when
encountering U+01CE etc. instead of doublewidth?

What if one just wants priority given to the first two rows of them?