\stemDown e8[ r e] r e[ r e] r | % 1
e8[ r e] r e[ r e] r \stemNeutral | % 2
<< \override NoteHead #'style = #'cross { r8 b'[ r b] r b[ r b] } \\ \override NoteHead #'style = #'cross { e,8[ r e] r e[ r e] r } >> | % 3
\stemDown e8[ r e] r e[ r e] r | % 1
e8[ r e] r e[ r e] r \stemNeutral | % 2
<< \override NoteHead #'style = #'cross { r8 b'[ r b] r b[ r b] } \\ \override NoteHead #'style = #'cross { e,8[ r e] r e[ r e] r } >> | % 3