Boss Martin Jol admitted he is struggling to find space for the duo in the same starting XI.
But Bent told Fulham's Google+ Hangout: "The manager wants to work on the partnership with me and Berba. We haven't really had a chance yet because of injuries.
"On the training pitch we are working on things and trying to get it going.
"Berba can play with anyone because he's that good a player.
"But partnerships take time. Hopefully we will be firing on all cylinders soon."
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