For 5G can we use 4DL4UL option?

Hi All,
For 5G can we use 4DL4UL option?
Anyone tried it?
I used 4DL2UL, but can 4DL4UL be used?

Your UE should support 4x4 MIMO in UL.

Is it possible as of now for 5G?
I’m seeing 16DL16UL as well… Is this possible?

I havent seen above 2x2 MIMO in UL, that too the UE is limited mostly, in US commercial deployments.
But the lab test experts may comment.