tremolo w/dots

[bobr...@centrum.is]

Does LilyPond know how to do this without resorting to using  \markup?  The 
dots over the stemDown note also looks too far right.  I could adjust it on a 
case-by-case basis but that seems rather tedious if LilyPond can do the dots 
itself without using \markup.

-David

\version "2.22.2"

\relative c' {
  \time 2/4
  \repeat tremolo 4 { c16^\markup{ "...."}} 
  \repeat tremolo 4 { c'16^\markup{ "...."}} 
}