messy chord

[mark damerell]

Lilypond 2.13, trying to set a SATB vocal score using the
template from appendix 4.1. In one bar the tenors sing
(using absolute pitches)    g4

first bass sing   g8  (f8)   (with an automatic beam)

2nd bass sing   g,4

I have tried several ways to enter the bass parts, none
of them work. The least bad I have found is

 <<   \\ { g8 (f8) } \\   \\  g,4 >>

and the g,4 collides with the beam on the g8.  Please how can I
drag the   g,4  about 2 mm to the left?

thank you, Mark