\version "2.11.48"

<<

  \new Staff = someUniqueName
  \relative c'' {
    c4 c8 r8 r4 c
  }

  \context Staff = someUniqueName 
  \new FiguredBass \figuremode {
    \set useBassFigureExtenders = ##t
    <4>4 <4>8 <4>8
    
    <6>4 <4 6>
  }
>>