\version "2.13.39"

\score {<<
    \new Staff \relative c' { \clef "bass" g4 g f e | g g f e }
    \new FiguredBass \figuremode {
      \bassFigureExtendersOn
      <5>4 <5\!> <5> r4 |
      % Here, the extender for the 3 needs to be broken and a 3 printed on every
      % note, while the 5 continues for all notes
      <5 3>4 <5 3\!> <5 3\!> <5 3\!> |
    }
  >>
}