Fuel lines location???

2009 Monster 696

Doesn't show the white tape in the service manual, just refers to the pipes as 'in' and 'out' so that's not much help.
Usually the pipes kind of fall into the correct position from retained 'memory'.
If it was me I'd just swap them over, it can't do any harm and if it starts maybe take a photo of the correct orientation for future reference.
If the bike won't start in either orientation then perhaps you've knocked a hose or connector off the fuel pump, can you here the pump priming when you turn the key?

Black is fuel delivery, white is return.