lineup = 
  \tweak outside-staff-padding #0
  \tweak staff-padding #0
  \tweak padding #0.2
  \tweak parent-alignment-X #CENTER
  \tweak self-alignment-X #CENTER
  \etc

\relative c' {
  g\open
  g\lineup ^\markup \combine
              \musicglyph "scripts.open"
              \musicglyph "scripts.tenuto"
  g\lineup ^\markup \combine
              \musicglyph "scripts.open"
              \musicglyph "scripts.stopped"
  g\stopped
}