\version "2.11.36"
#(ly:set-option 'point-and-click #f)

mI = \relative c'' {g4( g' g, g') | R1 | g4( g' g, g' |g4 g' g, g') }
mII = \relative c'' { g4( g' g, g') | g4( g' g, g') | R1*2 | }

\score {
  \partcombine {\mI} {\mII}
}


\context Score \with { \override CombineTextScript #'avoid-slur = #'outside } {
    { \partcombine {\mI} {\mII} }
}