I'm talking about number 14 here:
not the cam caps shown here in "1" and part of the head assembly kit!
The cam caps are easy to identify, the exhaust one being smaller and being hold by only four bolts while the intake cam cap is held by 6 bolts.
The valve lifters (valve caps) are impossible to identify back.
Math, its because the caps are installed, torqued then the cam bore is machined. And yes, you can not buy a cam cap, it only comes with a new entire cylinder head! You can remove them and look for "fingerprints" ie hone marks to get them back in their original spot, cant even be flipped over either!. If they are in the wrong spot, you could end up with galling of the journal/camshaft which can destroy the head. In the automotive end, you can find a machine shop who could bore it to an oversize and add inserts (called bearings sometimes) but I doubt there is such a thing for motorcycles. Get them back where they belong.