\version "2.18.2"

\score {
  <<
    \relative c' {
      \key d \major

      \repeat volta 2 {
        e2 r |
        \set Score.repeatCommands = #(list (list 'volta "1., 3."))
        R1
        \set Score.repeatCommands = #'((volta #f) (volta "2., 4.") end-repeat)
        r2
        \set Score.repeatCommands = #'((volta #f))
        r8 d4. |
        \bar "|"
      }
  
      d1 d1 \bar "|."
    }
  >>
}