note / rest clash

[pabuhr]

How do I move the rests further to the right to avoid the clashing note
columns?

\version "2.16.0"

melody = \relative c' {
        \time 3/4
        << { \stemDown b,2 b4\rest } \\ { g'4 g g } \\ { \stemUp d'2 d4\rest } 
>> | \break
}

\score {
        <<
                \context Voice {
                        \clef "treble_8"
                        \melody
                }
        >>
} % score

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