rightHand = \relative c' {
  \repeat volta 2 {
    \partial 4 c4
    \barNumberCheck 1 % corrected
    d4 e f
  }

  \repeat volta 2 {
    g4 |
    \barNumberCheck 2 % corrected
    a4 b c d |
  }
}

%%\include "articulate.ly"

\score {
  %%\articulate {
    \new Staff \unfoldRepeats \rightHand
  %%}
}

%%\include "articulate.ly"

\score {
  %%\articulate {
    \new Staff \rightHand
  %%}
}