+\relative {
+ \once \override Stem.direction = #UP
+ c'16
+ \once \override Stem.direction = #DOWN
+
+ c''8 c,,16
+ \once \override Stem.direction = #UP
+ c16
+ \once \override Stem.direction = #DOWN
+
+ c''8 c16
+ \once \override Stem.direction = #DOWN
+
+ c16 c,,8
+ \once \override Stem.direction = #UP
+
+ c16