"It's a big challenge" to come up with such a system, he said.

But, no need to come up with a sensible system.

I didn't hear the two coaches come up with a better system after the game.

Thomas Hope came up with a system of cost calculation.

I've done a bit of studying and come up with a new system.

Can't they just come up with a system where there is no need to change the clocks - at all?

Lawyers were given to Monday to come up with a new system.

Instead, we ought to come up with a general system.

He was going to have to come up with a system.

Only a computer could come up with a system like the Exchange.